Normally if I do get an update notice from App World it shows up in messages along with email, BBM, etc. but this morning there was a red indicator on the App World icon so I pressed it and low and behold there was an update available for Facebook. I really don't recall being notified in this manner before.
Went into My World today and had three upgrades (Protect, BBM, Facebook) and no notification ever pushed to the homescreen. Could this be carrier related? i'm on verizon.