According to the latest issue of the British magazine "Modern Railways" Irish Rail intend to order 41 intermediate cars for 22K units as this has finally been approved by the NTA. They will be delivered over a two year period from March 2021.
From 2023 onwards IR want to start taking delivery of 480 new vehicles:
250 which will work off the overhead and additionally with either battery or diesel power
230 which will be overhead only.
Additionally the article states the 2700 reinstatement has been abandoned (one tender, deemed too expensive) as has the project to re-engine some or all of the 201 locos (no compliant tenders received)