As far as I'm aware there are tiny changes in the week and the May timetable change is to restore the planned weekend services. Anything extra will be in December.
Surveys have been going on to consider some tweaks to service patterns, and I'd expect that will be for December too.
I've had a chance to have a look through it in more detail now - somewhere along the line I'll get time to put it into SimSig!
MONDAYS TO FRIDAYS
MF the main change is of course the second Cambridge/Brighton, which seems to finish in the mid-evening reverting to hourly. Not sure if this is a permanent fixture, or whether there's more to come in the future. There's also an extra early-morning KX-Cambridge semi-fast as part of the same pattern. The second Cambridge/Brighton calls at Ashwell, and there's a few extra Ashwell calls during the peaks. One morning service does Brighton/Royston and return as opposed to reaching Cambridge.
Many extra Letchworth calls and a few extra Royston calls on the 387 services, with almost everything departing KX at XX:09 and XX:39 after 16:39. This seems reasonably sensible IMO, and no doubt is in response to Letchworth being one of the most vociferously objectionable to the new service, in particular having lost their non-stop London services. Letchworth also gets 387 calls on Saturday evenings. Ashwell loses most of its 387 calls.
The remaining Royston 365 services revert to Baldock as expected, except for one morning service for some reason. Naturally this also results in some changes to incoming workings at KX for some of the evening peak 365 services.
The evening peak XX:06 and XX:36 fast Peterborough services now depart at XX:12 and XX:42, with the 19:36 KX-Peterborough revised to depart at 19:18. The 16:42 service now calls at Stevenage, and all evening peak 1PXX services are now booked to use the down slow line north of Woolmer Green. The 19:57 KX-Baldock 365 service now calls at Knebworth (Hitchin passengers will be furious at losing their last remaining non-stop service!).
No real changes to the KX-Cambridge North/Cambridge stopping service, apart from some very minor timing tweaks.
The inners also appear to be largely left alone, although the sole 1x313 diagram should be 1x717 now. Of course the remaining Stevenage via Hertford services now terminate at Watton-at-Stone, the only exceptions being the small handful which originate or finish at Letchworth sidings which run in service from or to Stevenage. The only other real change is some very minor retimings, mainly around Watton-at-Stone and Hertford North.
There's also some tidying up of reporting numbers across the board, mainly involving ECS services, but also including a couple of passengers services, such as 2C16/2C33 becoming 2R16/2R33 to denote that this working reverses at Letchworth.
SATURDAYS
On Saturdays the various gaps have been filled, and there's a half-hourly KX-Peterborough service all day, which is a mixture of 700/1, 2x365 and 2x387. Cambridge/Brighton is hourly through the day with one from and to King's Cross at the start and end of the day. These are all presumably 700/1. The KX-Cambridge stopping service is half hourly all day, with half the service turning back at Royston. This is all 700/0 apart from one late evening service which is formed of a single 387. For 365 fans, there appears to be no 365 working to Ely on Saturdays in this timetable - whilst there's a small amount of crossover with the Peterborough service, these are all 2x387. There's little scope for 2x365 appearing on the stopping services as the Royston services all interwork with the Cambridge services, and the start and finish locations don't readily match up for 1x365, although of course it could happen with suitable adjustments being arranged on the day.
SUNDAYS
As far as Sunday goes, the main change is 1tph Gatwick/Cambridge through the bulk of the day, formed 700/1. The Peterborough service is hourly, now booked for 700/1s through the bulk of the day. There's a few GN services formed of 1x387 at the extremes of the day to various destinations. The 3x tidal flow limited stop Peterborough extras are a mix of 365 and 387. Unless I've missed anything this is the only booked 365 activity on Sundays, although I can't see any reason why they can't substitute for 700/1s reasonably readily on the Peterborough route.
