All the Toms Hardware article sources is a wccftech.com (ahem) article, whose author, despite saying "It has been claimed by multiple source blah blah blah," can only source back his article to...you guessed it...SWEclockers.com!
We have one (1) source only for this rumour. The fact that other sites are sourcing the source (and others sourcing the source of the same source) does not mean anything more than that.
EDIT: As for the AT article, saying that the GK110 Tesla card "has all of the graphics hardware we would expect in an NVIDIA GPU" is not the same thing as "has the die-size we expect in a future NVIDIA GPU for the consumer market"
Not saying the rumour isn't true. I'm just saying that it is 1, single, unverified, rumour. Given how many rumours during the lead-up to the Kepler launch turned out not to be true, we should tread carefully, very carefully