4tph off peak Moorgate to Hertford (2 continue to Stevenage as now), 6tph peak Moorgate to Hertford stays (evening peak is extended from Gordon Hill to Hertford finally), 2tph Sevenoaks to Welwyn runs all day instead of 4tph Moorgate to Welwyn (the quietest stations will not receive 4tph off peak). A small but much appreciated improvement, almost returning to the Dec 2019 timetable.
No, these are not rumours, Enfield Transport Users Group has mentioned it and has had several GTR representatives come into meetings lately.
However I think increasing Moorgate to Gordon Hill back to 8tph peak as was in 2019 should be an absolute priority, even with the full 717 fleet these trains are often back to full and standing like with the 313s.