It appears, in the Google Places search result, of the main searches, the third part reviews whilst still being linked to the result are not taken into consideration for the total reviews. Google's own reviews are only being depicted in the review count.
Maybe it its just a minute change, but with Google making many changes as of late, maybe this little change might be a part of the big picture. Perhaps this is an indicator that Google is not done yet. Expect lot of rankings to change for local listing!