The Sony A55 will soon be replaced by the A57, the Sony A57 with 16 Megapixel sensor is expected to arrive on March 13 according to sony alpha rumors (SAR),
Specification of Sony A57
16 megapixel ExmorHD sensor
100-16000 ISO (up to 25.600 with MultiNR)
12fps
Same menu and focusing of the Sony A77
Swifel screen
No top LCD
No GPS
New battery grip
EVF (not as the A77/A65)
