The event is still open for any and all product managers and product marketers to attend. In fact, because 960 people have already registered, you definitely should attend. Last year's P-Camp was jam-packed with useful information, and it provided an unparalleled opportunity for PMs to compare notes. Attendance last year was a fraction of this year's pre-registration number, and the value of the P-Camp only increases with numbers.
Look forward to seeing you there. (And you'll have my gratitude if you vote for my afternoon presentation on the strategic role of PM.)