Summary: I can't say I completely understand the moves made by RIM over the past year and releasing a PlayBook with integrated cellular data surprised me.
I owned a couple of BlackBerry PlayBook tablets, but kept selling them off because there were better alternatives that actually had a future. There was a longtime rumor of a 4G PlayBook in the works, but after the failure of the tablet, major price cuts, and RIM's woes I figured it was off the table. Thus, I was surprised to hear that RIM announced the 4G LTE BB PlayBook. The 4G LTE PlayBook will launch in Canada with Bell, Rogers, and TELUS on 9 August with availability in the coming months in other regions.
This new PlayBook with cellular data will only come in the 32GB variant and is otherwise the same as the existing PlayBook tablet. The QNX-based OS is fantastic and a real pleasure to use, but with the tight integration with a BB smartphone and low price of existing PlayBook devices I just do not see a market for one like this that will require another data plan from the carrier. I do still think the WiFi PlayBook is one of the best choices for a WiFi tablet, especially if you honestly compare the hardware to other devices like the Amazon Kindle Fire and Nexus 7.