Nothing in Heller today
Court announced six or seven ops this morning, leaving ten to go. Next opinion day is Monday. Court is considered likely to add on an extra opinion day -- ten in one day is more than it likes to issue.
Of cases argued in Feb. two remain, and of March, two, incl. Heller. As often is the case, they save the controversial ones for last (one Feb. case is the punitive damages in Exxon-Valdez oil spill, and for March there's Heller). I suppose with the controversial ones, there's a lot of internal negotiation, additions to opinions to answer the opposing opinions, and stress on getting it nearly perfect.
The Court CAN put over a ruling until its next Term (October) but I think it's a very rare event.