I passed the PE in April of '11, got the notice in June. I got exam prep email and snail mail from many companies for several of the PE exams, mostly for the Civil prep. I don't do Civil. I got email and snail mail for exam prep for at least a year after I passed, and from time to time, still get some.
Given the low pass rates for PE exams, it would make sense that most people getting ads before results would fail, just as a matter of statistics.