Thanks to
@Edirim for providing the block data for the changes which has allowed identification of interesting workings that are appearing. Notably, at peak Marine will operate a single journey on the 8, 14 and 35.
Central has a few more journeys on the 15. There is an increase to the general BZL interworking taking place, lots of route swaps all over the place across the 7/8/9/14/24 and also one instance of a 27 swapping. There is also an increase of bus swaps in the evening on BZL routes (one bus returns to the depot, a new one comes out).
The morning 37As become a 28 and 7, the morning 39As become a 4 and a 5. The new morning 48 trip to RIE also becomes a 4 which means it'll be decker operated. The evening 37A comes off a 11, the evening 39A comes off a 49.
It can be made clear therefore the "A" variant in this case is sticking with the depot of the main route. 37A at Central, 39A at Marine.
Otherwise anything else interesting is just a case of reshuffling of peak journeys where necessary. One example being an existing solo peak trip on the 23 now going onto the 1 to allow a general reshuffle of trips and a bit more breathing room.
