Looks like Irish Rail are looking for An Bord Pleanála to give planning permission for another track for the remnants of the Youghal Line, according to this: https://www.thejournal.ie/irish-rail-an-bord-pleanala-application-cork-rail-network-upgrade-5909582-Nov2022/
Also they're hoping to get new signalling, get a new platform at Cork Kent, and eventually order new stock! I recall also reading in another article they want to reopen Buttevant Station. Any thoughts?