Hey, I Just accessed Appstore for the first time! I've seen the 2 screenshots on the homepage and dunno if anybody has got more yet, but here are a few of my own.. I got on appstore by randomly tapping buttons as it opened, and trying about 20 times, heheh :P
It was something like double tapping after force quitting then opening it again, something like that, but I haven't been able to access it since that time
But anyway, here they are, and by the way, clicking "Store terms and conditions" doesn't do anything for me, it doesn't open safari like it does in the iTunes app. Oh, and it seems very buggy at the moment, and sorry for the bad quality screenshots.
Featured tab:
The genres is the same as the one on the mmi homepage:

(Not my image)
Clicking on one of the categories just presents us with a nice blank screen:
Top 50 Tab: (Now has icons, the one on homepage doesn't)
Again, blank screen if you click either of those apps:
[IMG]http://aycu17.webshots.com/image/49456
/2006288209380277013_rs.jpg[/IMG]
Search: This happened when I click on search, the keyboard never gets the whole way up, and my phone completely crashes for about 5 seconds then the app restarts on the features tab. This happened each time ic licked search again.
Updates: Pretty self explanatory
Hope you find these interesting / useful whatever. Sorry my message is full of typos and errors, im in a big rush just about to gout. Bye for now.