While Nvidia is yet to confirm or refute the claims, the launch seems to be imminent, judging by the detail that has gone into the ‘rumour’.
‘SE’, as you might already know, is a bit of a misnomer. It stands for Special Edition and usually involves surprising consumers with a castrated version of the full chip it gets its name from, in this case the GF114 chip of the GTX 560. This being the case the GTX 560 SE will carry 288 CUDA cores, 48 TMUs, 24 ROPs and a slimmer 192-bit memory bus to address 1GB of GDDR5 (@3828MHz), translating into 92GB/s of memory throughput.
If you look at the specs, you'll actually notice it is quite similar to the GTX 555, however, for all intents and purposes, a GTX 555 is something you won't spot on a retail shelf. The GTX 560 SE, on the other hand, you will.
While most reports are placing the GTX 560 SE at “sub-$200 prices”, this would make little sense because it would directly conflict with plain vanilla versions of the GTX 560, as well as being a bit overpriced compared to its 28nm HD 7770 rival. In order to pull this one off, Nvidia will have to retail these at $150 or so. It would be a feeble counterpunch, otherwise.
Hopefully this will be the last of the Geforce GTX 560 legacy which has clearly befuddled more than a few consumers with its branding antics. As a counter to the Radeon HD 7770 launch it is more flash than anything, as performance will be lacking compared to AMD's.
The launch is rumoured to take place in the coming weeks.