Today my Main Account (banned february 2016) was unbanned, also friends Account (December 2015) too.
Many others also reporting unbans.
Go give your old Acc a try.
BOL: banned before 2015 -> still banned (EUW)
BOL: banned Second Half 2015 -> unbanned (TR)
GOS: banned Aug 2015 -> unbanned (EUW)
BOL: banned Sep 2015 -> unbanned (EUW)
GOS: banned Oct 2015 -> unbanned (LAS)
GOS: banned Dec 2015 -> unbanned (EUW)
LeagueBot + GOS: banned Feb 2016 -> unbanned (EUW)
BOL + EB: banned Feb 2016 -> unbanned (TR)