I just received my 15 MBP this morning. It has the 500GB 7200 RPM drive. With migrating 235 GB of data from my old MBP and running all the updaters, I have yet to hear the beep/click. But I downloaded the firmware update just in case.
Edit: looks like my MBP shipped with a drive that already has the new firmware.
Edit: looks like my MBP shipped with a drive that already has the new firmware.