At the beginning of this year, it was rumoured that a developer called A2M were working on a version of Indiana Jones and the Staff of Kings for less powerful consoles (Wii, PS2, PSP and DS) much like how Krome Studios have done with The Force Unleashed. The rumour suggested that their version not only had a smoother development than the LucasArts version but that it was going to be released this year to coincide with the home video release of Indy IV.
It seems like this might actually happen, as the European ratings board PEGI have just rated the game for handhelds. It's possible that the Wii and PS2 versions will be released with the next-gen LucasArts version, but the handheld versions were deemed different enough to be released earlier.
Interestingly, they've been given a surprisingly high rating: 16+.
At the very least, this does confirm that the title Staff of Kings is correct. Now, why haven't LucasArts said anything? Even the Clone Wars games haven't been rated yet!
UPDATE: Well, well, well. Since this was spotted, several sites have starting discovering new info. Here's two things I don't think anyone's noticed:
1. A2M confirmed that they were working on an Indiana Jones title for LucasArts, so that rumour's true.
2. That PEGI page has REMOVED the rating for the PSP version of the game. It did seem odd, as the PSP version is likely very similar to the PS2 version, for that one to be released. The radically different DS version alone makes more sense.
Kotaku also have a few interesting points, such as the possibility that the Nazis will be once again Generic Soldiers. Oh, and we got quoted by TheRaider.net. Woo!