Saw it too... about an hour ago. Definitely new. Though they've taken the graphic down since (it was where the valentine's "Toast for Two" graphic appears on the home page). Must have been a trial run.
Last year's MegaBonus promotion began on February 15 (ended May 15). Here's hoping that Marriott allows us to repeat the bonus this time around. Last year we could only get the bonus once (7 nights = 10,000 points, and you're done).
I've never seen Web development like what's going over there at Marriott... it's like they use the production ("live") environment for testing. The "My Account" link hasn't worked for the past day (it's back now) and before that they had
two "My Account" links!