New rail franchise holder KeolisAmey will make a £5 billion investment in rail services across Wales, including a new direct service between Bangor and Manchester Airport starting in 2022.
There will be a 72% increase in the number of services running between North and South Wales compared to the existing services.
All existing trains will be replaced by 2023, with extra and more comfortable carriages.
On Sundays, an extra 294 (61%) more services will run across Wales by Dec 2019.
£15m will be spent to improve disability access.
More than 600 new jobs will be created, including 200 new on-train customer service staff, and add 30 apprenticeships per year.
Fund and support all staff who want to learn Welsh.
Across the rail network there is £194m allocated to station upgrades. Every single station in North Wales will be upgraded.
Free travel for under 5s extended to under 11s. Half-price fares extended to 16 – 18 year-olds. Under 16s go free off peak.
Free wifi at stations and on trains.
Economy Secretary Ken Skates said: “This will be transformative for services in North Wales, it is very exciting.
“Passengers will see a real difference to services and to stations, creating 21st century, safe and aesthetically pleasing stations that are open to all.”