My guess is that they want to fit in some of the postponed fixtures in December and January, so they've waited to see who has the free midweek before Christmas, and therefore which games can also fit in Midweek in January before they fix the weekend fixtures in January?
These were due to be announced today.
They haven't been yet.
Currently:
Monday 26th December
Southampton 15:00 Brighton & Hove Albion
Saturday 31st December
Brighton & Hove Albion 15:00 Arsenal
Monday 2nd January
Everton 15:00 Brighton & Hove Albion
Saturday 14th January
Brighton & Hove...