my application was verified today and aadsas just emailed me and said they will be mailing out my application soon. does this mean i got into the first batch of mail-outs?
All you can do is wait. Tough to say for sure whether you'll be in the first batch. Just try to be patient, as not being in the first batch isn't going to kill your chances or anything.
I've heard that if your application is submitted and verified by this Friday, that you'll be in the first batch of mailings scheduled to mail out the 29th of June. This is according to a director of admissions at a dental school. They recently had a national conference and they were told this by AADSAS.