App World updated for a lot of people a couple of days ago and for some reason the updates have been trickling out slowly. I finally got the update pushed to me and I know several other people got the update notification also. This is a small update from 126.96.36.199 and fixes a reinstall issue that some users were having.
This update is for a bug fix, and does require a reboot after install.
This update seems to be rolling out slow and spotty to folks, so you can wait, try ALT rst while in app world or do a battery pull to try and speed the process up.