More toy pics. Notably, that's not the Sword of Plun-Darr in that Mumm-Ra figure's freakishly oversized hand; also interestingly, it looks like it's got an "Eye of Thundera" of its own. Could be nothing (the original Mumm-Ra figure came with two swords that he never used on the show); could be that's the new Sword of Plun-Darr and the figure holding the oldschool one was one of the "Classics" toys.
There WAS a reference in the first press release to "Stones of Power"; I really don't care much for the collection quest sound of that, but it could be there's a world full of artifacts just as powerful as the Eye of Thundera. Eyes DO tend to come in pairs.
(The Superman/Thundercats comic had a second Eye of Thundera just chilling in a museum in Metropolis. No explanation was ever given.)
(And hey, the Claw Shield's got an eye on it too. Could just be the symbol, though; the Thundercats like to paint it on everything.)
(Oh also, look at Panthro -- that's the first I've seen a visible Thundercat insignia on one of the toys; up to this point they've been empty red circles on the figures themselves and on the artwork. There was some conjecture that they were Transformers-style heat-sensitive things.)