According to the Map Airports Limited Website, their 2011 Key Dates has Ex dividend date as 24th of June 11. 30 June is record date and payment on 18th Aug.
In the AGM presentation, it stated that they expect to maintain the distribution at 21cents for the 11FY. If similar to 10FY, I would think it may mean an upcoming 11 cent distribution. But DYOR.