We already know that the PS3's Cell processor is going 45nm in 2009, but if Impress' information is correct, then the chip is set to be around much longer than that. Apparently Sony's next generation PS4 is also set to sport the Cell processor when it arrives.
Supposedly the decision is borne out of a desire to help save development and production costs. While it sounds like bad news for those hoping Sony would be keeping competitive with Microsoft, which pretty much certainly has an Xbox 360 successor in the works it isn't necessarily so. The Cell is arguably still a much more advanced CPU than that in the Xbox, so if Sony can give its graphics (the technically weakest area of the PS3) a decent overhaul it should still be able to remain technically competitive with Microsoft.
Previous rumours have slated the next generation of Nintendo, Microsoft, and Sony consoles for around 2010, so we'll definitely be waiting a while yet before we have any official confirmation about tech specs from any company. There's still plenty of life left in the current generation of consoles, anyway, that we hardly need to worry about what may or may not be coming in a couple of years time.
Impress (Google translated).