One major bright spot during Palm’s recent rocky history has been the success of its Centro–a Palm OS device that’s cheap, small, simple, and a best-seller. Even once the far fancier Pre is out, you’d think that Palm wouldn’t want to abandon the low end of the market. And it looks like you’d be right: Engadget has a photo and some other details on a WebOS phone allegedly called the Eros Eos which is allegedly coming to AT&T. If it’s real, it looks like the Centro’s successor. And even if it’s someone’s fantasy…well, the basic idea is so logical that I’d be stunned if Palm doesn’t come up with something similar. And with the Pre debuting exclusively on Sprint, it also makes perfect sense for the company to have something else it can sell via other carriers to keep its partnerships with them from fading away.