The summer issue was mailed on May 16. The Fall and Winter issues will be mailed about 3 months and 6 months respectively after that.
That assumes you joined for this year. Under the current membership policy, memberships run Jan-Jan. If you elected to join this year then you will receive all 4 issues. In that case the spring and summer issues will be mailed to you. If you elected for a membership next year, then you will receive all 4 issues for next year (and none for 2005).
This is currently a very busy time in the AAW office. The 2005 Symposium is in 2 weeks. The symposium prep is the primary focus of the office work at this point. So your other 2 issues may be a bit tardy.