I emailed Verizon on the 17th and simply asked if I was able to move my NE2 date (08/26/10) up so I could order the Droid X. The next day I had someone call me and tell me they looked into my email and moved my date up to that day.
It was extremely easy to have my date pushed up by more than a month, so I would suggest trying the same thing since your date is in less than a month.
yeah, i'd be surprised if you're not able to move up your anniversary date by 3 weeks, especially if you're signing a new 2 year contract.