Leaked: BlackBerry Messenger
Well, that didn't take long. Just the other day BlackBerry Messenger was leaked to the interwebs and now we have .53 floating around and most importantly .54 is now up for OTA download. Word of caution of course it's NOT official by any means so if you decide to download make sure you at least make a back up first. Also note, only 4.7 + and higher plus the servers are likely being crushed with requests so if you are not able to download it the first time, look in the comments for a mirror of the file or just sit tight till the rush passes. (Thanks for the pic, @Sloth26)