The three Welsh Region teams were originally expelled from the competition last month (May 31) for joining a new Anglo-Welsh Cup with teams from England's Guinness Premiership.
However a compromise has been reached, with the Anglo-Welsh Cup being accomodated into the regular Celtic League season. The heightened possibility of bringing Italians teams into the Celtic League for the 2006/07 season will be up for discussion next May.
The League guarantees the Irish provinces 20 games per season.
The League's Association is due to make another statement later today.