Allocation is given out each month, for production the next month. Ordering a car doesn't mean it will get built (just ask the guys waiting 3+ months for their SRT8s, and still no allocation). Allocation for June build, should come out in the next few days.
HOWEVER, if you ordered a Charger from a good-sized dealership, that dealership should not have a big problem getting that car allocated. These are, after all, not limited production cars. If they get any allocation at all, sold orders are given priority. PM me if you want more details, or hit 300cforums.com and look for some of my posts explaining the process.
RT