Whoa there, RIM -- not so fast. Despite an earlier commitment from Sprint, the Wall Street Journal reports that the Now Network has cancelled its plans to bring WiMAX to the BlackBerry PlayBook, leaving Research in Motion to continue selling WiFi-only models of the half-baked tablet. Sprint representatives cited poor adoption rates among business customers as one reason for the move to cancel PlayBook sales, along with an already crowded tablet market, also adding that the decision will have "no impact" on the carrier's relationship with RIM. We can't say that a WiMAX-capable PlayBook would have topped our back to school wish list, but this latest move is somewhat shocking nonetheless.
