It was like 50 people 5 minutes ago on the server, atm it's 25.
I'm pretty sure at least ~10 people were banned for trying out new stuff, other people just were fast enought to leave after the warning.
Sure nice way to kill all the hype about the new patch, if you really don't want people to use invisible armours and things better release the patch properly or give a day leave on these things.
PS: didn't really care myself since I have to go to sleep anyway
PPS: don't think I've ever been banned before, how do you check for how long?