There are so many stories going around, noone seems to know for sure. My dealer said that there was no more 'break in chip' or computer programmed break in period etc., however now after a few local sleds really woke up at exactly the 6hr marker he's wondering with the rest of us what the deal is.
Mine has almost 6 hrs on it now (2 rides) and does seem to burn more oil than I expected, it has pretty good power through the range but still doesn't keep up with other revs or '08 xps out there. I read in another thread about a 13 hr break in period. So who knows, 6, 10, 13 - I think the point is that whatever the time period may be, they do work a lot better when broken in. I wouldn't be in a rush to start modding or adjusting anything until you reach this 10+ hr marker, let the sled sort itself in a stock condition. That's my opinion.
nate