Many thanks for that further insight ... we too in Wiltshire are looking forward to further major timetable changes this December - first details overdue as they were expected at lunchtime on 8th June and I don't know what the delay is at Network Rail - "hopeful but pensive / unsure" at the moment, I think.
Grahame, do you know if they intend to put them on the
FGW▸ website like they did last year? would be useful if they did.