Hi @Amjed Ali ,
Please find the below suggestions based on my knowledge and research,
1.What is the new version in Exchange SBS.
Newer version of Exchange is 2019 and SBS is Windows Server 2019 Essentials. However, its not supported to install Exchange on Windows server essentials
2.The new version of SBS supports POP3 connectors?
Exchange Server can be integrated with the Windows server essentials environment by installing it on the second server.
3.Exchange 2019 Enterprise or standard version support the same POP3 connector?
Yes, POP3 protocol is supported in Exchange 2019
4.If I am running SBS 2010 how can I upgrade to the latest version?
Add a second server to domain i.e. Windows server 2016 standard and install Exchange 2016. Migrate Exchange services from 2010 to Exchange 2016. Install latest service pack and rollup update on the Exchange 2010 before the migration.
Please note that Exchange 2010 cannot be migrated directly to 2019.
https://assistants.microsoft.com/
5.Is this product (SBS) supported by Microsoft Support.
You can check the product lifecycle here - https://support.microsoft.com/en-us/lifecycle/search/1167
6.What's the support roadmap for Exchange SBS?
As stated earlier, newer version of Exchange, 2016 and 2019 is supported to be installed on Windows Server 2016/2019 Standard or Datacenter
If the above suggestion helps, please click on "Accept Answer" and upvote it