Yes, you can find that some locations have already been pre-selling tickets to The Twilight Saga's: Eclipse, but according to Summit Fandango and MovieTickets.com will begin Pre-Sales on May 14, 2010! My credit card is ready and I'm sure I'll be buying 22 tickets again!
Twilight and Eclipse are on the top of my fave's in The Twilight Saga, so since Twilight was somewhat of a bust, I AM DEFINITELY looking forward to the third installment! This will be the best 2 hours and 4 minutes I'll invest on 6/30/10! Who am I kidding, I think I will be spending 6 hours and 12 minutes of pure bliss on 6/30/10!
Source: Summit, Fandango, MovieTickets.com, Twilight Examiner