As a note to customers who were previously hosting Beta 1 applications for test purposes, as beta 1 is no longer a supported test platform for SLS. Authors should update/upload their applications using the latest Silverlight 2 bits. These are available (with the tools) from the Silverlight community site.
Silverlight 1 applications hosted on SLS are not affected by this upgrade and still supported of course.
Remember that you can also now directly upload a XAP file to SLS using the Manage Applications functionality and then it will dynamically create a manifest file for you – so you don’t have to even worry about packaging up things in some scenarios!