Munster have been added to the 50-overs interpros for 2021, but there will be no first class championship games for at least this season.
A combination of the Covid 19 pandemic, financial costs and no home Tests in 2021, have led the governing body to forego the multi-day matches, but possible solutions to restore the format will be looked at in the future.
There will be six games for each of the sides in the 50-over competition which gets under way in early May.
The T20 Trophy competition comprises a series of three-day festivals.
Picking the four squads will be undertaken by Andrew White and Graham Ford, who will work with local Coaches Nigel Jones, Simon Johnston, Ian McGregor and Ted Williamson to choose a core squad of 12 players for each team.
The provinces can then add additional local players as and when they see fit. The match day squads will continue to be chosen by local selectors within the framework.
The selectors will adopt a policy that balances the need to strengthen the tournament via best v best against ensuring the strength of Provincial identity. There will also be a new player loan system will be put in place for 2021, allowing for teams who have injuries and exceptional circumstances around player availability, to take on loan a player of suitable quality and skill-set which they may not have locally.
There is good news that there will be a new emerging interpro competition for the reserve sides of the four provinces, which will be managed by Albert van der Merwe, the National Talent Pathway Manager.
There will be also new performance coaching hubs, and the fact that Munster's is in Dublin gives a clear indication of where the majority of their players will be drawn from.
The CI statement said - Over the next three years, Cricket Ireland and Munster have agreed the strategic need to invest time and resources into youth cricket, talent pathway and the Munster Heat Emerging squad, while re-focussing the Munster Reds to meet the wider needs of Irish cricket.
“This is an exciting day for domestic representative cricket across Ireland, as we start to move forward with some substantial reforms to the men’s game," said Richard Holdsworth.
"A viable and sustainable inter-provincial structure feeding talent into the international set-up is crucial for the competitiveness of our senior side on the world stage.
“The best v best philosophy seeks to ensure we don’t have a host of talented players sitting on the sidelines, and that they are getting proper competitive cricket. Balancing this with the need to maintain a sense of regional identity was an important piece of these improvements – and will be one of the main components of ensuring that regional coaches are working closely with national coaches.
“The future investment in Munster aims to improve the identification and development of local talent. It is fair to say that current structures were not developing talent at the rate hoped for, so a renewed focus was agreed and we believe this will provide a boost to Munster-based cricket representation at senior levels in years to come.”