Now that the SharePoint 2013 beta is on the streets, it’s time to start keeping track of those glorious build numbers. This blog post will have all the build numbers, their friendly names, how to get them, and what I know about them. Just like my SharePoint 2010 Build Number post, let me know if there are things I can change, or any content I should add.
To find the build version of the SharePoint farm using the UI (User Interface):
To find the build version of the SharePoint farm using Windows PowerShell:
To see which build your products are :