Not to burst your bubble but i would imagine that the same conditions applied that were already in place, had to have legacy lvl 6 before midnight on April 12th 2012.
I think you're wrong, they still have time to reach the goal:
We've also got another significant piece of good news: everyone will have until April 22nd at noon CDT (5:00pm GMT - click here for a time zone converter) to have a Level 50 character or Legacy Level 6 on their account to get 30 days of game time on us. (Your 30 days of game time will be applied to your account on April 25th by 11:59pm CDT.) Players will now have multiple options, as well as more time, to try and reach these goals and play all the great new content in Game Update 1.2.