In terms of Scotrail on my local route (Motherwell/Larkhall-Dalmuir/Milngavie) there are some noticable changes:
Monday-Saturday:
All Hamilton Circle services now run to Dalmuir only:
Westbound:
Previously the 2Fxx Motherwell/Cumbernauld to Dalmuir ran via Yoker, it now runs via Singer.
The 2Lxx Larkhall-Milngavie service no longer runs to Milngavie, instead Dalmuir via Yoker.
The 2Sxx Whifflet line trains still go to Dalmuir but run via Yoker instead of via Singer.
I don't get why the 2Fxx services from Cumbernauld/Motherwell westbound go via Singer when they previously went via Yoker anyway, the 2Lxx Larkhall trains should go via Singer imo.
The 2Vxx Springburn-Dumbarton Central service runs to Milngavie instead, basically replacing the trains from Larkhall to Milngavie. This means that Bearsden/Hillfoot/Milngavie can only be served by trains via Queen Street. It also means that Kilpatrick/Bowling which were normally served by these Springburn trains only, are now part of the Airdrie-Balloch route.
Eastbound:
2Cxx Milngavie-Motherwell/Cumbernauld starts from Dalmuir instead, running via Yoker. it is in the path of the old Dalmuir-WhiffletLine service as far as Rutherglen. Main departing times at Glasgow Central being xx.27, xx.57 or thereabouts
2Lxx Dalmuir-Larkhall is the same as before, running via Singer.
2Rxx Dalmuir-WhiffletLine still runs via Yoker but from Hyndland onwards it is in the path of the old Milngavie-Motherwell service, with the main departing times at Glasgow Central being xx.04, xx.34 or thereabouts.
However during the evening/night time after 20:00. Milngavie-Motherwell/Cumbernauld operates again, using the units off the Springburn services. Larkhall-Milngavie runs again too.
There is also one train which does Milngavie-Motherwell via Carmyle and the whifflet line which normally never happened:
Realtime Trains provides live realtime running information for the Great British railway network using open data.
www.realtimetrains.co.uk
Also there are no Friday night extra services stilll.
When I have more time I will have a look into the services more fully but that is what I can see from RTT.