GO Transit has killed off bus routes 90, 90c, and 91. This means less transit service to Newcastle. Bowmanville will continue to have service through a new DRT route and GO Bus 88.
It's sad how much GO wishes to cut bus service but it seems that 90 and 91 were duplicated by the new DRT route which offers more frequent service. It also means less use of the various park and ride stations used by the 90/91 but I think those will be used for expanded train service. Route 88 which serves Newcastle remains.