well it doesnt exactly mean book 6 does it? i mean for all we know 'future' could be the last few pages in book 7. which sucks. i quite like percy, i dont know why. but i find him adorable. i dont excuse his actions, he is a giant git in book 5 and more than a little blind.
i personally dont see a percy- rest of weasleys reconciliation very soon. its too juicy not to be drawn out.....IMO
but i think it could just as soon as be in the summer holidays, ie just as soon as the book starts.