The rumored Sony A58 is expected to have a 20MP sensor when it arrives in the next couple of months to replace the current Sony A57, which has a 16MP ASP-C sensor. The Sony A57 retails for $700 for the body only and $800 with a kit lens. Expectations for the 20MP A58 would put it in the same neighborhood of price for the respective body and kit.
Additionally, the upcoming Sony NEX-3N is expected to feature the same 16MP sensor as found in the NEX-F3. The F3 retails for $600 with a kit lens (although it can be had for $500 right now thanks to instant rebates), so it would be expected to see the NEX-3N slide in at the same price point as it replaces the NEX-F3.
Other products expected to be unveiled from Sony sooner rather than later include a Zeiss 50mm f/1.4 at $1600+, a new 18-55mm II kit lens for Alpha cameras and a new 70-400mm G f/4.5-5.6 II in the $2500 price range.