Count 'em, because RIM has now announced four varieties of its BlackBerry PlayBook tablet. As of today, we've got the PlayBook with WiFi + LTE and WiFi + HSPA+ models joining the previously announced PlayBook with WiFi and PlayBook with WiFi + WiMax. As such, there's a pretty good chance that your carrier will have a 7-inch dual-core PlayBook with the QNX-based BlackBerry Tablet OS on offer at some point in the future, no matter how it chooses to define "4G." Unfortunately, RIM says that its LTE and HSPA+ models won't be coming until the second half of 2011.
Update: RIM co-CEO Jim Balsillie was particularly chatty after the announcement of the new 4G PlayBook models. The takeaway is that RIM expects to price that BlackBerry tablet at less than $500 (WiFi-only model, presumably) -- much less with any carrier subsidies. He's also expecting to followup the Sprint deal in the US with similar signings of AT&T and Verizon Wireless. "All of our carrier partners want [PlayBook]," said Balsillie, referencing the 580 carrier partners that RIM enjoys in 165 countries. While Balsillie refused to comment on the PlayBook's rumored ability to run Android apps, he did confirm that RIM's new tablet was on track for a March or April release.