Who's going to get the very first "tablet-optimized" Facebook app? Why, it's RIM and the PlayBook! The Canadian company has today revealed it's bringing a native Facebook app to its 7-inch, QNX-based slate, which will also be joined by a new Video Chat application. The latter will be available to download on May 3rd, with an over-the-air update dishing it out to current PlayBook owners. Its functionality will be no different from what we've come to expect from such clients -- both voice and video calls will be available anywhere you can find a a WiFi connection. As to the Facebook app, it's coming some tim
