Evidence has been piling up that RIM is preparing an LTE version of its PlayBook tablet, but rumor no longer: CEO Thorsten Heins let us know this morning at a press briefing at BlackBerry World that there will indeed be an LTE-capable PlayBook "later this year." It appears RIM doesn't have immediate plans to change the PlayBook's hardware in a significant aesthetic way, however — we've heard a couple of times this week that RIM is very happy with the device's hardware, and with existing PlayBooks slated to receive BlackBerry 10 the hardware may well carry over. Details are scant on the LTE device's specs, price, or carrier (we've heard AT&T and Verizon), but it's a clear signal that RIM's moving to add LTE connectivity to its lineup.