... and here's Newegg with a GTX 680 leak
Subject: General Tech, Graphics Cards | March 22, 2012 - 01:51 AM | Jeremy Hellstrom
Tagged: pelly wants revenge, nvidia, leak, gtx 680, fermi, 28nm
Not to be outdone by NCIX, NewEgg also managed to jump the gun on the GTX 680 earlier today. The screengrab that was sent tp Bright Side of News shows their pricing of the soon to be released GTX 680 with models ranging from $500 to $535. The specs are there for all to see, a GPU running at 1.006GHz, Shader clock of 2.012GHz, effective memory of 6.008GHz and 1536 Stream Processors. Contrast that with the last GTX 580 that Josh reviewed which had a 782 MHz core, 1.564GHz shader, memory at 4.008GHz and 512 SPs and you can see it is a big step up!
If you visit NewEgg now you will be greeted with a different result, a page describing the GTX 680's various features and a Buy Now button which unfortunately doesn't work at this moment. That is a situtation which obviously cannot last as NewEgg would not have put it up. Of course the realization that you can pick up a pair of GTX 570's for the same price might just mean some recalculations will be in order once we see the performance of the actual card.