FUD Zilla speculates a dual-GPU version of Fermi may arrive towards the end of the second quarter of this year:
Dual Fermi can be expected hopefully towards the end of Q2 2010 and the high thermal dissipation and complexity of cards are few reasons for this postponement. Nvidia would definitely like to have dual cards out, but it might take a little while before it happens.
A good news is that mainstream and entry level Fermi versions should be coming this summer, slightly delayed from its original plan, but for the Dual card, it’s not certain when should it happen. Nvidia is not telling much to us or its partners either.