I had two long flights this week and I caught up with all my reading of internal Windows Phone discussions.  
There were some great questions (and answers) that I have not seen externally – some of it on not yet announced changes or fixes; don’t hold me against these, mostly sharing so you can plan your app’s road map-. I was taking notes, and turned it into an FAQ,  you can now find these at our Learning Windows Phone Site’s FAQ

I hope it is useful; will try to update it every few weeks on friday’s so bookmark it and check it often..  

Also while shamelessly plugging great content, don’t forget that we released the April CTP version of the Windows Phone Training Kit this week too.    You can get either an offline version  or an online version

Please feel free to spread the word on these two.  

Thanks!!