Mr. CE "Doug Boling" posted a little bit more on CE7 here

The big news from a technical perspective is OS support for multicore processors (I’ve run it on a 4 core ARM CPU and it rocks!) and support for up to 3 GB of physical RAM.  The new kernel also supports ARM 7 (but as a tradeoff, ARM 4 support is dropped).

Cool news – we will need lots of processor power

Silverlight For Embedded, first released in CE 6 Release 3, has been updated to support Silverlight 3 constructs and is accompanied by a powerful development tool that eases the integration work to hook in the C++ code behind. Multitouch and gesture support has also been added.

Needless to say I would have prepared a managed Silverlight story – at least as a second option. Nevertheless this sounds like the tooling around the unmanaged Silverligth improved

Check out www.microsoft.com/windowsembedded/en-us/products/windowsce/compact7.mspx for details.

Hope I have time to look at it on “real” Device soon!