Despite the images that were leaked last week concerning the single-PCB design for the GTX 295, the card simply won't be available any time soon.
Even with Computex just weeks away, it is begenning to look like the card will only be there on display and not available for the public to purchase. Instead it will more than likely be towards the end of June that the card will hit the market and probably just slide in as a replacement as the older dual-PCB design goes out of stock.
The good news is that even with the consolidation of the two cores down to a single board, the card will still retain the same speeds and memory. This means you will still have 1792MB of GDDR3 and core/shader/memory clocks of 576/1242/1998MHz.