Well, one competitor’s heard the bell, gotten out of their corner and is coming out swinging. The BlackBerry PlayBook announced yesterday is slated for early 2011 release, price unknown. According to Fast Company’s lengthy writeup, the PB seems to have an edge versus iPad and Samsung’s Galaxy Tab in the processor, connectability, two cameras plus video, portability and weight areas. But their biggest advantage is enterprise and security–it may be what the IT folks are looking for, not necessarily what users want, as they are tethered to yet another device. BlackBerry PlayBook: Everything You Want to Know.