A. By definition, the RC is feature complete. The only changes made after the RC are bug fixes and performance tweaks. If you have the RC installed, it's performing well for you, and you're not experiencing problems, then installing all the post-RC builds isn't really worth the effort in most cases. Just wait for the release to manufacturing version and install that. If you don't have the RC build, it's certainly worth installing the RC of the OS.
This is different from new Windows builds in the beta stages. It's very common during the beta cycle for newer builds to have additional functionality, so installing new builds as they are released can be advantageous.Related Reading:
- Q. Is Windows Server 2008 R2 built on Server 2008's kernel in the same way that Windows Server 2003 R2 was built on Server 2003's kernel?
- Top 10 New Features in Windows Server 2008 R2
- Windows Server 2008 R2: Not Your Average R2
- The Little Things About Windows Server 2008 R2
Check out hundreds more useful Q&As like this in John Savill's FAQ for Windows. Also, watch instructional videos made by John at ITTV.net.