Test and Report your Issues
Scott Gu indicated that the primary purpose for the early public release was to get the product tested as much as possible, particularly around performance and stability.
To run this version, you need to remove both Visual Studio Beta 2 and .NET 4 Beta 2. Also remember that Silverlight 3 and not Silverlight 4 is supported with the RC. Support for Silverlight 4 will come later.
Intellisense Crash Issue has been Fixed
One big issue that was identified after the RC release was that Intellisense was crashing Visual Studio 2010 RC. This appeared to happen on machines that have UI Automation enabled and certain devices -- like the Tablet PC -- connected.
A patch has since been created that you can download and install.
Windows Azure and ASP.NET MVC
A couple of other important notes. There is a new version of the Windows Azure Toolkit. Version 1.1 is for both Visual Studio 2008 and Visual Studio 2010 RC. There are a few bug fixes in this version in addition to a couple of new features.
Before you install version 1.1 you have to remove the version you have installed for Beta 2 of Visual Studio 2010. If you have any issues, there's a post on the blog Project Cool that may help.
And if you are one of the developers getting deep into ASP.NET MVC, there's an order to installing it and the Visual Studio 2010 RC that works best. Earlier this month, a second RC was released for MVC in response to customer feedback. But it's not MVC RC 2 that's in Visual Studio 2010 RC.
If you already have MVC RC2 installed and not Visual Studio 2010 RC then you are okay and don't have to do anything -- the installation process will recognize a newer version of MVC and won't install the old version. But if you installed VS2010 first, then you have to do some manual changes, as Phil Haack explains in this blog post.
Want to learn a bit more about the release candidate for Visual Studio 2010 before you download and install? There's a video on Channel9 with Visual Studio General Manager Jason Zander that explains some of the bug fixes and does a little demonstration.