Today is the last day of the early registration period. I'm not sure precisely when at or after midnight Eastern time the switch will flip to regular pricing but, with full refunds available just for the asking through February 19, there's nothing to stop you sitting on the fence as to whether you can attend the event or not for 4 more weeks AND locking in the early bird pricing, assuming you're free to deal with registration this evening.
Thanks, Jon. Because of time zone issues, the early pricing will last until sometime tomorrow, though I hesitate to give the exact time, since, see above... So, register!