According to Kara Swisher of Boom Town, the official Apple iPad 2 event will be March 2nd. Likely, the event will take place at the Yerba Buena Center for the Arts:
“To those who care intensely about this kind of stuff–which would be pretty much everyone in the tech ecosystem–Apple will hold its much-anticipated event on March 2, where the tech giant seems poised to unveil a new version of its hugely successful iPad, according to multiple sources. Analysts expect the iPad 2 to be thinner than its predecessor and feature an improved display, as well as front-facing camera and Facetime video chat support. And some reports suggest it will be powered by one of Qualcomm’s multimode chips and will run on both GSM and CDMA-based networks around the world.” – read more