When will Sony release its promised 24 megapixel dslr for widespread public sale.?

they alluded to it at the photo shows this winter.....and if it is for real, i may wait and see before taking the plunge on the 39mp helblad for fine art shooting. i print some photos as large as 20X30. I don't know if it is just the male in me wanting a faster car or worth the bucks. some pros say ye and some no. i have a gorgeous 20x30 of the disney center in la at sunset in my brkfst room from my d-70 days!!!!