The device being announced is most likely the much rumoured Nokia EOS. Given that the Nokia 808 PureView was announced more than 16 months ago it seems likely that Nokia will have further refined its imaging technology in both the hardware and software departments, but we'll have to wait until next month to find the full details.
It's worth remembering that zoom was only part of the Nokia 808 PureView story. There was also a capability to capture images at resolutions up to 38 megapixels, but arguably the most significant was the pixel oversampling technique used by the camera that produced 5 megapixel images from the 41 megapixel sensor by combining up to seven pixels into one super-pixel. This oversampling technique resulted in images with very low levels of digital noise, and unparalleled detail and colour accuracy, and has become the benchmark by which all camera phones are judged.