Chancellor Rachel Reeves is focusing on a £454m investment for brand new rail projects in North and South Wales as part of today's spending review.
Plans include five new stations and upgrades, addressing the long-standing issue of underinvestment in Welsh railway networks.
Full details of the plans and its impact on North Wales travellers are expected to be published shortly.
While the Treasury sees the potential for transformation, opposition politicians from various parties have argued that the funding needed for North Wales railways falls short.