Good Gear Guide
Beta vs RC: What's new in the Windows 7 Release Ca...
Still holding onto the Windows 7 public beta? It's time to switch. Since the Beta was released back in January, Microsoft has refined almost every aspect of the upcoming operating system.
From the get go, the changes are immediately noticeable. The Action Center no longer bugs you as soon as you start up your PC and the overall look is much sleeker. We installed the Beta and Release Candidate on the same PC, but only the RC was able to use Aero without difficulty — the Beta had constant problems with both its own graphics drivers and official drivers from ATI and NVIDIA.
Beta vs RC: What's new in the Windows 7 Release Candidate?