Nothing will happen. They will get a fine, say sorry and promise not to do it again.*
*get caught again
I don't think so this time - 100 different charges have been made against them this time - Way more serious allegations and if you look at the actual rule breaches - they are much more serious than last time.
It will take an age to sort out - will rumble on for a while I suspect and ultimately the Premier League is in uncharted territory here with this level of breaches/charges against City.