Castle!

Wow.. hammet, 'the leader' of the castle project just got hired at microsoft.

That project had good stuffs like a container and web MVC framework for .NET.
I hope this does not mean castle project will not continue to envolve, and that the new MVC framework at microsoft will be good.

!

Tabs

There are rumors that gnome 3.0 gui's, will be heavily based on tabs. Some people may like it (i do for some applications...).
I dont think its a good idea to hard-code the applications with the tabs. Instead of that, there should be a generic way to group content in a more high-level logic fashon, and let the user decide if he/she wants tabs, treeviews, or some other kind of representation...