Qualcomm's newest silicon will be made by the Taiwan Semiconductor Manufacturing Company (TSMC) using an advanced 20nm process. According to industry sources, the adoption of 8-core chips will not raise smartphone prices.
There is little clue towards what the first eight-core, 64-bit smartphone on the market will be. Currently, we're awaiting the first Snapdragon 805-powered consumer device to be introduced sometime in the summer. Speculations point towards the upcoming LG G3 or the Samsung Galaxy S5 Prime.