Neutralday claims to know the specs of the Fullframe Sony Alpha 750!

-High quality in 35mm full size image sensor with 14.6 effective megapixels
-Column-Parallel A/D Conversion method -Column-Parallel A / D Conversion method
-Ultra high speed digital output (12 digital channel parallel LVDS output) -Ultra high speed digital output (12 digital channel parallel LVDS output)
-12bit-AD converter on chip -12bit-AD converter on chip
-Multiples readout modes -Multiples readout modes
-Scan mode 15.2 frames/s (12bit) -Scan mode 15.2 frames / s (12bit)
-Window readout -Window readout
-Diagonal width 43.3mm (type 2.7) -Diagonal width 43.3mm (type 2.7)
-Total pixels 4752 (H) x 3213 (V) approx. 15.26M pixels -Total pixels 4752 (H) x 3213 (V) approx. 15.26M pixels
-Effective pixels 4692 (H) x 3115 (V) approx. 14.61M pixels -Effective pixels 4692 (H) x 3115 (V) approx. 14.61M pixels
-Active pexels 4661 (H) x 3096 (V) approx. 14.43M pixels -Active pexels 4661 (H) x 3096 (V) approx. 14.43M pixels
-Chip size 41mm (H) x 31.9mm (V) -Chip size 41mm (H) x 31.9mm (V)
-Unit cell size 7.91μm (H) x 7.91 μm (V) -Unit cell size 7.91μm (H) x 7.91 μm (V)

Price: $1400-1800

They recieved this specs from an anyonmous sender. So take it for what it is…a rumor only!