I should add that it is not surprising that there is some doubt about the exact services on the line under the new franchise. The Northern Hub and Arup Calder Valley reports identified a number of interventions required to support improved services - signalling and line speed improvements, Rochdale 3rd platform, Halifax 3rd platform, Bradford capacity improvements and East of Leeds capacity improvements (not to mention the Ordsall Chord). While all of these are budgeted for during CP5 (funded either by Network Rail or via the West Yorkshire Combined Authority), they were planned as a sub-project of TPE North electrification and thus timescales throw into doubt.
However work has now started at Rochdale and the
DfT while being typically vague have announced that "The intention is to complete the works in phases, starting at the Western end and finishing in time to provide a diversionary route such that the Transpennine Route Upgrade can be completed by 2022". That gives some hope that the work will be complete by December 2019.
Hopefully more will be known later this year when a detailed CP5 plan is released, also the detailed business case for East Leeds Parkway finalised. Another unresolved question is whether there is an extra path via Dewsbury for 2 Northern tph.