Yes, the PSR-E models insert the count-off measure. I've been able to circumvent the count-off measure by very carefully timing the repeat-- as you may have seen me describe in other threads either on this forum or on other forums-- but it's easy to get off on the timing and it requires constantly (or repeatedly) hitting the button to repeat the loop, so it isn't a "hands-free" solution. Also, if I remember correctly someone with a PSR-E3xx model said that it works differently on his model than on my PSR-E4xx models, so it appears that the "trick" I had described isn't always a potential solution.
EDIT: Oh, wait, you were specifically asking about the PSR-E463/PSR-EW410. I had also noticed that the count-off measure isn't mentioned in connection to the A-B Repeat feature, so it's possible that Yamaha changed the way that feature behaves on the new models. And from what Fantomas has said, it sounds like the count-off measure does not get inserted before every iteration of the A-B Repeat loop, only at the very beginning of the entire song. And while you can't prevent the count-off at the start of the song, you can at least turn the Metronome Volume down to 0 so the ticking can't be heard.
