After winning UFC 162 by stone cold knockout, Silva has announced that he wants a rematch and Weidman has accepted. IMO, it will be an interesting match. I, like many of my amigos, predict Weidman to win. Submission rather than KO this time.

Official announcement:

http://www.usatoday.com/story/sports/ufc/2013/07/13/ufc-168-anderson-silva-vs-chris-weidman-rematch/2514777/
UFC President Dana White promised the world that new UFC middleweight champion Chris Weidman and former kingpin Anderson Silva would meet again. Now it's official.
The UFC boss on Saturday revealed on ESPN'sSportsCenter that both Weidman and Silva have agreed to meet Dec. 28 in the headlining bout of a previously announced UFC 168 event, which takes place at Las Vegas' MGM Grand Garden Arena. The night's main card, including the Weidman vs. Silva rematch, airs on pay-per-view. White further confirmed that bout agreements have already been signed.
ODDS: Silva a 2-to-1 favorite already?
WATCH:: Silva cries after losing UFC belt
White previously announced UFC 168 would see women's bantamweight champion Ronda Rousey face former Strikeforce title holder Miesha Tate in the evening's main event. However, that fight between former Strikeforce champs and opposing Ultimate Fighter 18 coaches will instead serve as the co-main event of what starts out as a star-studded affair.
The announcement comes one week after historic UFC 162 event in Las Vegas, where a confident Weidman upset the former champion. Weidman, of course, expressed his desire to face Silva a second time even before they stepped into the cage at UFC 162, knowing it would take a pair of victories over the pound-for-pound great. Meanwhile, the former champ at first suggested that he wasn't immediately interested in a rematch, but White insisted the Brazilian would reconsider his position and seek redemption against the undefeated Weidman.
He has.