Just giving my updated app review experience.
Had both my apps in review and approved in 36 hours 3 times in a row. So in the last 10 days I have had 3 versions approved. Great.
Each time I go into review within 12 hours.
Maybe Apple are doing this as I constantly submit revisions.
It should also be noted no one is actually opening the app, my server detects installs and none are found.
Both my apps are several k downloads a month.