Developer only policy on this release
Microsoft Silverlight team released developer version of silverlight to introduce breaking changes in new release to developers. Scott Guthrie on his blog mentioned that this release is only for developers as the regular end-user edition of Silverlight will not be released for this RC0:
“This is because we want to give existing developers a short amount of time to update their applications to work with the final Silverlight 2 APIs before sites are allowed to go live with it”
Microsoft also released breaking changes in a document file that can be downloaded from here.
New controls
Silverlight now has three more control: ComboBox, ProgressBar, and PasswordBox. Control’s skin is also affected and now they have a new look
.