My mate works at Sports Direct (not in store, but higher up in position), and he reckons LFC, along with City, Chelsea and Arsenal will be releasing four kits next season, PL home, away, third and a 'special' home kit for cup games.
Seemed really implausible to me - although you never know what clubs are gonna do to make more money - thought I'd share that anyway, in case anyone else has heard any rumblings themselves.