It looks like the Thundercats license will be a bit more expanded than previously thought.
The license comes through Icon Heroes, and beyond the SDCC box set, it looks like there will be at least two more box sets, each featuring 4 figures and one unarticulated figure. Also on display was a vehicle and a statue/playset.
Pictures can be found at Pixel-Dan. Thanks to Feroz Nazir (I should just let you post the news, cut out the middle man)