Mashable: iPad 3 Ahoy! Apple Invites Press to March 7 Event to 'Touch' Something - https://mashable.com/2012/02/28/ipad-3-event/
Ars Technica: Apple announces March 7 event, likely iPad 3 announcement: http://arstechnica.com/apple/news/2012/02/apple-announces-march-7-event-likely-ipad-3-unveiling.ars
Gizmodo: It's Official: Apple Will Announce the Next iPad on March 7th: http://gizmodo.com/5888983/apple-will-announce-the-next-ipad-on-march-7th
Engadget: Apple iPad event confirmed for March 7th in San Francisco:http://www.engadget.com/2012/02/28/apple-ipad-event-confirmed-for-march-7th-in-san-francisco/?utm_source=twitterfeed&utm_medium=twitter
Techcrunch: It's Official: Apple Sends Out Invites For March 7th iPad 3 Event... In San Francisco: http://techcrunch.com/2012/02/28/march-7th-ipad-3/