I noticed the same thing on Tuesday of last week and I panicked. I called and was told to be safe and fill out the name update form on the website. The instructions on the form say to email the signed and completed form back with a copy of your passport. I emailed everything in on Tuedsay evening and had an confirmation email on Thursday letting me know that the update was complete. My new admission ticket was available to print yesterday.
I would imagine that if you emailed everything today, you would still have plenty of time to get everything updated.