To correct myself, it's actually May 13th for the next call, firstly.
As for the patterns, I don't think they have requirements beyond scheduling them within a timely manner from close of the quarter. Keep in mind though this is year-end as well. 4th quarter (1st quarter calendar) is generally Sony's weakest in isolation, but should be an interesting call/report.
MSFT IR has been released.
EDD nicely profitable