The day is today 27/05 and riot released patch
11.numbers. You go and make a backup of the League of Legends.exe, .dll and such. Wait for two weeks and in 10/06 when RIOT release the new patch
11.new.numbers you just have to replace the new League of Legends.exe, .dll and shet with the old ones with made the backup two weeks ago.
I may be talking rubbish, but I have seen different people relasing hotfixes here in the foruns and the after understanding what the 'hotfix' are I get to this conclusion.
The release is done
here by the members of the forum.