Is there a lot of difference between Office 2010 and Office 2013

This article is a reasonable summary of new features in 2013:

http://www.pocket-lint.com/news/46571/microsoft-office-2013-whats-new

Office in General

2012 08 14 http://office-watch.com/t/n.aspx?a=1733 Office 2013 overview - What you need to know about Office 2013 and getting the preview.

2012 08 08 http://www.infopackets.com/news/business/microsoft/2012/20120808_windows_8_metro_interface_unavoidable_report.htm -

http://arstechnica.com/information-technology/2012/07/office-2013-microsofts-bid-to-win-the-future/

• good review, 4 long pages

http://www.winsupersite.com/article/office-2013-beta2/office-2013-secrets-143718 links to all 2013 articles on the site

http://www.winsupersite.com/article/office-2013-beta2/office-2013-public-preview-features-office-143698   New Features in Office

http://www.winsupersite.com/article/office-2013-beta2/office-2013-public-preview-multitouch-gesture-support-143702

http://www.winsupersite.com/article/office-2013-beta1/office-2013-public-preview-office-demand-143697 Office 365 On Demand – improved “CTR”

http://www.winsupersite.com/article/office-2013-beta2/office-2013-public-preview-screenshot-gallery-143708#/0

http://www.infoworld.com/d/microsoft-windows/3-reasons-business-will-office-2013-197970 Business Focus

http://www.informationweek.com/news/galleries/software/productivity_apps/240003864 2013 10 Best Features (12 pages, lots of links)

http://arstechnica.com/information-technology/2012/07/office-2013-web-apps-a-step-forward-but-still-dependent-on-the-desktop/

http://www.infoworld.com/t/office-software/office-2013-shifts-security-focus-devices-identities-198196

http://technet.microsoft.com/en-us/library/jj219429%28v=office.15%29 Technet Overview Addon Apps for Office 2013

http://technet.microsoft.com/en-us/library/cc179050%28v=office.15%29 – Technet Security overview for Office 2013 Preview

http://www.eweek.com/c/a/Enterprise-Applications/Microsoft-Office-2013-Customer-Preview-Proves-Difficult-With-TouchScreens-473641/

http://www.winsupersite.com/article/office-2013-beta2/office-2013-tip-disable-animations-143779

http://www.howtogeek.com/120936/beginner-how-to-enable-touch-mode-in-office-2013/ Enable Touch Mode in 2013 (not default)

(there are lots more reviews on the net, "google is your friend")

Some big things, some small.  Lots of emphasis on "the cloud": saving to the cloud, collaborating through the cloud, running office "click to Run" from the cloud (and monthly/annual renting of Office). They've "improved" the user interface to be better suited for small devices.

It really depends on how you use Office. For a home or single user a lot of the changes don't do you much good. If you are a business user and are willing to invest the time and effort  to learn the new features then it could well be worth your while. Unfortunately, most businesses I know aren't that visionary.

If you have a "spare" machine, or enough space on your machine,  you can download a copy of the preview,  it is very similar to the final version.

Download - Install Office 365 Preview

http://blog.indezine.com/2012/07/step-by-step-install-of-office-2013.html - Step-by-Step Install of the Office 2013 Customer Preview

http://www.microsoft.com/office/preview/en - Official MS 365 Trial Download site = click to run installation (?)

http://www.microsoft.com/office/preview/en/faq - FAQ

http://www.askvg.com/microsoft-releases-office-2013-customer-preview-free-to-public-download-links-inside/

http://technet.microsoft.com/en-US/evalcenter/hh973391 - Download Microsoft Office 365 ProPlus Preview

http://technet.microsoft.com/en-us/library/cc326108%28v=office.15%29 Technet Office 2013 Preview resources

About Office 365: http://www.microsoft.com/en-us/office365/online-software.aspx

More About: http://www.microsoft.com/en-us/office365/office-online-services.aspx

Forums: http://community.office365.com/en-us/forums/default.aspx

The MS 365 FAQ page explicitly states that all Office 365 is a new version of “click-to-run” now called “Office On Demand”

<snip>

Office installs more quickly than ever, thanks to Click-to-Run, a streaming technology that lets you begin to use Office applications before installation is complete. All of the Office 365 plans use Click-to-Run.

</snip>

<snip http://www.microsoft.com/office/preview/en/faq>

Can I keep my current version of Office during the Preview?

Yes, you can install and use the Preview version alongside an existing version of Office 2003, Office 2007, or Office 2010.

</snip>

The above articles indicate that the Office 365 download is installed in a virtual environment, a “computer within a computer” which is supposed to allow you to install it parallel to existing Office installations, including Outlook.

<snip http://www.microsoft.com/office/preview/en/faq >

Why is my country not listed for Office 365 Home Premium?

The Preview version of Office 365 Home Premium is supported in a limited number of countries. If your country is not listed, we strongly recommend that you select a different product to preview. Selecting a country that you don't live in can cause issues with other Microsoft accounts that you might already have, including Xbox and Zune.

 </snip>

Please note that this Customer Preview of Office 2013 will expire approximately 60 days after the RTM (final version) of Office 2013 becomes available in the market. Once the Preview version has expired, the applications enter read-only mode, which means that you can view or print documents only, it isn't possible to create new documents, edit, or save them. You must uninstall the Preview version of Office before installing a newer version of Office.

<snip http://www.networkworld.com/reviews/2012/082012-microsoft-office-test-261612.html >

How long does it take to install Office 365 2013

We started creating a Word document within a minute of starting the download (connected to a Wi-Fi network) and the whole Office suite finished installing in five minutes.

</snip>

http://www.net-security.org/secworld.php?id=13272 – Cloud Encryption for Office 365

Download - Office 2013 MSI Physical Install

The next links provide access to Office 15 Trial “traditional’ MSI local hard drive installation This link indicates that you still can do a “Custom” install that controls location and parallel install: http://answers.microsoft.com/en-us/office/forum/office\_home-office\_install/couldnt-install-officeplease-try-installing-again/3b985a43-0015-4806-be96-ffe951ef24ca

q

Please note that this Customer Preview of Office 2013 will expire approximately 60 days after the RTM (final version) of Office 2013 becomes available in the market. Once the Preview version has expired, the applications enter read-only mode, which means that you can view or print documents only, it isn't possible to create new documents, edit, or save them. You must uninstall the Preview version of Office before installing a newer version of Office.

http://blog.indezine.com/2012/07/office-2013-preview-get-msi-download.html 

• Office 2013 Preview: Get the MSI Download

http://blog.indezine.com/search/label/office_2013 -  Step-by-Step Install of the Office 2013 MSI Download

https://profile.microsoft.com/RegSysProfileCenter/wizard.aspx?wizid=f2648d40-84ce-4556-8545-93d52a3253f2&lcid=1033&ci=393  – Technet Office 2013 Pro Plus 32 and 64 bit Trial Product Key and installer (FireFox didn’t download for me ???)

https://msdn.microsoft.com/en-gb/subscriptions/securedownloads/hh442898#searchTerm=&ProductFamilyId=475&Languages=en&PageSize=10&PageIndex=0 – MSDN subscriber download of Office Pro Plus 2013 trial, 32 and 64 bit

http://office-watch.com/t/n.aspx?a=1728 – how to get “Normal” install, 32 and 64 bit

http://www.winsupersite.com/article/office-2013-beta2/office-2013-public-preview-oldschool-msi-installs-143723  = How to get

Direct Download Link for Standalone Offline Installer (32-bit) (624 MB) direct installer file download (you must get trial Product Key separately)

Direct Download Link for Standalone Offline Installer (64-bit) (702 MB) direct installer file download (you must get trial Product Key separately)

Deployment guide for Microsoft Office 2013

http://blogs.msdn.com/b/mssmallbiz/archive/2012/10/22/free-microsoft-ebook-deployment-guide-for-microsoft-office-2013.aspx