Owners of the Asus Transformer Pad Infinity are probably wondering why the TF300 and the T-Prime have already received Jelly Bean, while their higher-end tablet has not. Apparently, there has been a slight delay of some kind for the flagship Asus tablet, but the update is still likley to come sometime next week. Here's a quote with the details,

ASUS Technical Marketing Manager Gary Key explained that the company had run into a few technical problems with the keyboard when accessing the recently updated Facebook application.

“For those users in the US and Canada, the Release should be available early next week. A couple of applications that were recently updated (Facebook 1.9.10 on 9/20 as one example) required a last minute firmware update for the keyboard to operate correctly in the “Comment” area with Android 4.1. Sorry about the slight delay but this fix needed to be implemented before release.”
At least they are sharing this info with their customers. It's worth the wait.

Source: TalkAndroid