I don't know about AP rates, except they seem to come out after general codes have been released.
The current general code valid for check-ins 4/27-7/3 expires on April 15. Disney has never had codes running concurrently, so you likely will have to wait for a general code for the rest of the summer until after that.
AP rates...I seem to remember that before last year, it wasn't until very late March that AP rates were out for late April through some of the summer. You probably have a few more weeks to wait.