CBK recieved a full refurb last January, a brand new Cabin was installed with vibration absorbing seats. It also had a full re-paint. I except the same will happen with BYO, CPT. EHH however will be withdrawn from service in April, it is unclear whether it will also recieve a full refurb or if it will be returned to its lessor. REL, REO, REM, REP, SLL, SLN all have new Cabins and new colours, SLM which is expected to return to operational service from May also has a new cabin/colours. REH, REI are in RE colours with old cabin's their leases run out this year so it is unclear whether like EHH they will be returned to their lessors or recieve a full refurb.