Regarding to this post, can visual studio 2010 RC ready for production
I know there is already a duplicate question here, but that was asked when beta were available.
RC is release candidate... means if no major crashers are reported this will be the build that would go out for production. Thus, you may use it at your own risk. But, per Microsoft, do NOT use it for production.
If you are able to take advantage of the Go Live license and deploy applications developed in Visual Studio 2010 RC into production then Microsoft encourage that.
However the usual caveats apply, where, as with all pre-release software there are no guarantees as to its stability, reliability or potential breaking changes in the RTM.
I wouldn't start building a mission critical application using .NET 4.0 just yet. I'd use it to see some of the new features and get comfortable with it [as microsoft always love to move things around].
This is an entirely new runtime they've built, so it's a much bigger chance than 2.0 to 3.5.
So, basically, don't bet your career on it just yet but definitely use it.
I've been using VS2010 pre-RC for a few months working on a fairly demanding WPF application. It's ready, and it's awesome; I don't even have VS2008 installed on my machine anymore.
I work for a .NET component vendor (Syncfusion, Inc). We work for long cycles on pre-release code and have been very happy with Visual Studio 2010 RC. We had no trouble moving our code over. IDE integration features worked perfectly. It is a sweet upgrade especially if you are working with WPF, Silverlight or ASP.NET MVC. I would certainly say that Visual Studio 2010 RC is ready for prime time.
As of the Release Candidate, anyone running Windows XP Service Pack 2 is now locked out of Visual Studio 2010. I cannot upgrade this work computer to SP3 which is a huge pain in the ass as now I cannot use VS2010 unless Microsoft circumvents this dependency on SP3 via a patch.
Many big corporations upgrade their systems very, very slowly and thus Microsoft has locked out a lot of people not able to run SP3 from using it.