We are checking in July 4, so fortunately we were able to use the last round of discounts. However, if discounts are released for July 5 on, we may have to do two ressies if we can get the Poly for a good price.
Anyway, last year we went from July 19-July 26. The discount time periods were similar with the first round ending July 3. The batch for July 4- end of August came out the end of April, so I would expect them in the next few weeks.