Yes, I've finished my transition from the ADO.NET Entity Framework to Project Astoria. The team blog is already up and running over at http://blogs.msdn.com/astoriateam/, and as this post mentions, we'll be working with an eye towards being very transparent about how we go about doing the design.

Personally, I already have a few ideas in the back of my mind that might make for an interesting discussion, but of course I'll need to chew on them a bit before putting my thoughts out there. In the mean time, if you have any particular topics you'd like to open up for conversation, just leave me a comment or shoot me an email (I can never seem to find the 'email author' link on my own blog posts, but it seems every else doesn't have this problem :D).