Do you have Silverlight Beta 2 code? Then you really need to test with RC0.
Tim has done a great job of explaining in lots of detail what you should be doing as a developer with RC0 in preparation for the final RTW.
However I feel a simplification may help - then you can read what Tim has to say :-)
If you have any users of your Silverlight Beta 2 code then there is a high chance that you Beta 2 code will stop working on their machines when we do our final release of Silverlight.
Henceā¦ you need to test on RC0 now and be ready for the final release. Thanks all.