We all knew that the BlackBerry PlayBook will come to Sprint 4G network possibly in summer 2011. Now, there are news that PlayBook tablet will be available on AT&T’s 3G network as well. Expected release date is April. This will be followed by LTE version according to news. If availability of PlayBook on 3G and LTE networks provided by AT&T, it would be interesting to see which version would be more successful and AT&T new data abilities will be essential to handle all new data requests.