(SR4) A850 and A900 Firmware update release postponed (again)

Few days ago one of our trusted sources told us that Sony almost finshed the new firmware for the Sony A850 and the Sony A900 . He expected the official release for late March. The same source contacted me again and told me that the release has again be delayed. He didn’t gave me any reasons for the delay.
Also a second trusted source could confirm this rumor so I guess there is no way out form that bad news :(

Reminder (SR = Sonyrumor):
SR1=fake rumor (1% chance the rumor will become real)
SR2=rumor from unknown and unreliable source (10-20% chance the rumor will become real)
SR3=a rumor unknown source or sources which sounds realistic (20-50% chance the rumor will become real)
SR4=rumor from our trusted sources (50-70% chance the rumor will become real)
SR5=rumor from many of external and internal sources (70-90% chance the rumor will become real)