The only thing Yoshida actually said was that housing wouldn't be available at release and they'd make it available shortly after to give people time to go through the MSQ and not feel they had to rush just to get a house.

2 weeks/4 weeks/4.1/etc is all speculation by the player base. There is no official release date for it yet. Releasing it now would have been in line with Yoshi's statements. Releasing it in 4.05 or 4.1 is just as likely.