The original plan was the last week of February (the 26th for U.S.). But many people were upset over the sudden release date, thus a blue responded with saying, "if you dumped all your valor; you'll be able to cap again before 5.2" (not an actual quote - but that is what I remember hearing). Which brought the release date to the 12th or 19th, or even later.
So - to be sure I don't screw up my last few items I can upgrade with valor... just want to be sure if this sounds correct:
Feb. 26th is no longer the release date.
The 5th is likely
And anything after that is fair game.