Look, we've heard our fair share of PSP phone rumors, and there's really no reason to trust this one any further than your average baseless musings, but if Marketing Week's "sources in Japan and Korea" can be trusted, Sony's PSP phone could be hitting shelves as soon as Christmas 2009. What does seem clear to these shady sources is that Sony won't be forking over the PlayStation branding to its Sony Ericsson partnership, and instead will build its PSP phone all by its lonesome. Other "details" from "analysts" are slightly less legit-sounding, with some stating it would be "relatively easy" to work phone features into the PSP since it already includes WiFi. Um, ok. Still, reasonable or not, this is clearly a rumor that will never die -- until Sony builds the dang thing, in which case we can start talking up a sequel.