Ok everyone do not panic, yes it seems this year the average has gone up to 643.67 (so a good 20 point increase on the average), these scores are interim yes but usually they are an accurate representation of the real thing. Please do not panic, but make sure you plan accordingly in terms of medical schools, cut offs are likely to rise if the average score rises so if you are on the boundary of previous cut off scores then ensure that you are cautious in your next move.
I did expect this to happen, the removal of one whole section means 1 less to practice and 1 less to strain your concentration in the exam, it was inevitable that this was likely to happen.