One aspect I've only just found out about is the planned new Chiltern maintenance and stabling depot to be built on the down side south of Banbury. With capacity for up to 58 vehicles in 8 sidings, a two road maintenance shed, carriage washer etc etc, this seems to indicate a significant change to Chiltern's stabling and maintenance policy - and of course the location lends itself to greater use of the Cherwell Valley route for ECS▸ moves to and from Oxford - at least at start and end of service...
Ohhh, where have you seen that info - we've been sworn to complete secrecy on this for the time being!
Depends on Banbury resignalling as the South signal box needs removing...and I'm hearing that this might yet again get delayed in the grand scheme of things into
CP6▸ and beyond Chiltern's franchise. We'll have to see.