http://www.kumoricon.org/?page_id=13Badge Mailing Schedule
Badges are mailed out in batches at the end of each pricing tier. Please note that although pre-registration runs until August 16, pre-registrations after August 2 are not mailed and are held at will call.
Meaning some time this month. O_o
If you're worried or want to make sure you're in the system, email registration@kumoricon.org
There've been quite a few posts about this before, so please look around the forums a little before posting a new topic ^^;