As of this week they are unchanged from the pre-October 3rd diagrams. However, the Chiltern timetable is recast from next week for the new Oxford service and the bubble car diagram is changed. Unfortunately I don't have the new diagrams to hand but I'll post them as soon as I get them unless someone beats me to it. As I understand it there will be an additional return working in the evening in the new timetable.
121020 is currently at Tyseley having an F exam so there is only one bubble car at the moment which means it is occasionally prone to 165 substitution when 121034 fails. When 121020 returns this will become rare again. Incidentally, I'm told 121020 might be a different colour when it returns..