SnootySims posted a link on his Twitter page to Jeux Video PC in which lists what it appears to be the first expansion, The Sims 3:  Destination Adventure.

First add on the Sims 3 to land, Destination Adventure offers travel scenery to break the dullness of everyday life.

BricaSims found some more information regarding this expansion pack, so it’s a good sign it may be true.  Please note that the picture that appears in the following article is from TS3.

A title that leaves little doubt about the contents of the first additional disk, but still expect some details of key stakeholders to learn more. Meanwhile, divaguons on and extrapolate what will happen in this Destination Adventure. Of course, the extension will make the beautiful exotic travel history of sims away tired of their new city. But it is also an opportunity to engage in other activities, with real chunks of gameplay in it? A sort of The Sims 2: Naufragés that would bring a breath of freshness and interest to the series? To check this fall at the output of this additional content eagerly awaited by many fans of the series.