Monday - all the speculation (and none of this was from the Packers or Aaron Rodgers) was 3 - 4 weeks. Today multiple sources (again not from the Packers or Aaron Rodgers) are saying 4 - 6 weeks.
Rodgers is mum on the speculation....and historically he is a fast healer....and it is only a partial hairline fracture....so, I am personally thinking sooner than later. But, personally I do not want him back before he is healed enough. Rodgers and McCarthy always play things close to the vest.