Firstly, I don't work for Microsoft and hence my response is not from a Microsoft representative.
However, in the interim and until an official response is posted, this is a legit e-mail and does not contain any dangerous or spurious links. It is a badly formed communication and I was surprised myself, being an IT professional in the Microsoft arena.
The services under the banner of Outlook.com as listed in the e-mail (outlook/hotmail/live/msn) are moving to the messaging part of Office 365. Microsoft will transfer your content as your content is already hosted by their service and you just access a
copy of it from whatever device you are using (computer/tablet/phone etc.). What may change is the way that you access it, but it is likely to be similar to how it is currently set up. So your data won't suddenly get deleted, so don't panic.
I expect that better communication and instructions will be sent to everyone prior to their cutover. It is unlikely to all happen on the same date, but you should find that you are provided with something better than the outdated links that were added to
that e-mail. As this will be a migration of your e-mail that will take place over a period of time, you won't be able to set up your device today as your e-mail won't yet be on the new platform, so it wouldn't work.
My advice is to keep an eye on your e-mail.
For more information about this change, you can read the following:
http://www.windowscentral.com/outlookcom-users-will-reportedly-migrate-office-365-later-year
http://www.howto-outlook.com/news/outlookcom-is-moving-to-office-365-exchange-online.htm
http://blogs.msdn.com/b/tzink/archive/2015/04/18/office-365-and-outlook-com-hotmail-are-converging-infrastructure.aspx
Hope this helps.
Steve Downing MCITP