The patch was finalized already in February. I wonder why it took so long to release it?
Does that mean I can get info on current Windows 0days simply by subscribing to XP support program?
You could do what you said but it's pretty expensive and only works for a bulk deal at around $200/PC/year with a large number of PCs at a minimum.
I hope that the fact this patch was signed in February doesn't imply that it was published in February and available to every semi-competent cyberwarfare unit in the world.