There have been an outstanding 6 new wallpapers added! Its really just 2 with different text and zoomed, but they're not bad I guess.
As for themes, I don't know why they bother. The themes link just takes you to another link to Bplay. I guess there are plenty of themes on App World right now. I just don't see the point of keeping this link active. The only reason I can see is pretty obvious I guess: $$$. Bplay has got some deal going with RIM. There is also a link to Bplay for premium ringtones. Ringtones should never be paid for in my opinion; especially on a BlackBerry where you can make any song or sound ANY notification.
Anyway, check out the little gold plus signs when you get a chance. Or if you've hid that icon because it has been useless for so long, click this link on your BB browser: