On the grand sum of experience from my one pond :rolleyes: , I don't think LMB in KY up to 11" in June will spawn this year - your mileage may vary.
Bruce is right - the first LMB spawn you get, whether this year or next year, will grow like crazy. I wouldn't be surprised if they exceed the original stocker's growth rate, since they will have all the different sizes of forage available to eat when each size is optimum for them.