The delay to the 398s is possibly also allowing the late-running work on the station toilets to get finished. Here's an update to my
last summary of the situation in August:
Additionally, we now have toilets at Trefforest and Radyr (again, according to TfW's
toilets webpage).
So that means that the Merthyr line now has all its planned toilets; the Aberdare line is waiting on toilets at Cwmbach and Penrhiwceiber and the Treherbert line is still waiting on all its toilets (Treherbert, Treorchy, Llynypia, Tonypandy and possibly Porth, though I think the latter is a toilet in the adjacent bus station). Not sure why the Rhondda needs so many facilities but there we are.
So I can see that perhaps introducing the 398s on the Rhondda service might wait for more loos to be ready, especially if work's in progress. Does anyone have any updates?