By lengdere 
is this one(Q820A599)from the pcmaniacs ?
one of my friend told me tt all new E8600 for retail will start from Q850A599..
Q820A = ES ???
not entirely sure he typed Q820A599 in email could be typo.. probably best to confirm but i doubt it's Q850, that's week 50, 2008 - don't think we're there yet
