Here is the list of rumours on what may happen on Freeview from March 20th: (List not confirmed)
Channel launch:
*GREAT! Real set to launch on COM4 - outside Wales - on Channel 42.
Channels moves:
*GREAT! action moves from Channel 42 to Channel 50.
*GREAT! tv moves from Channel 50 to Channel 52.
*GREAT! romance moves from Channel 52 to Channel 61.
*GREAT! movies extra moves from Channel 61 to Channel 62.
*POP Player moves from Channel 212 to Channel 207.
Multiplexes Moves:
*That's TV UK moves from COM6 to COM5.
*Together TV moves from COM4 to COM6.
Channel rebrand:
*That's TV 2 rebrand as Chart Show Retro on Channel 65
Channels closes:
*GREAT! tv on channel 62
*Together TV +1 on Channel 92
*Tiny Pop on Channel 207
Information was posted at time of posting on https://www.terrestrialtv.uk/dtt.php