The Ulster Bank League season kicks-off on September 11 and it will see a whole new structure across the board.
There will be five divisions: Division 1A, 1B, 2A, 2B and 2C, with ten teams in each.
Connacht have four representatives with Galwegians, Buccaneers, Corinthians and Sligo all in different divisions.
It will be a historic season at Crowley Park as Galwegians compete in the top tier after securing a second successive promotion last season.
They backed up a sensational effort in 2013-14 with 14 wins in 18 games in Division 1B to finish top of the pile and gain automatic promotion to 1A.
’Wegians had dominated the league for much of the season but Trinity picked up after Christmas. Ballymena and Garryowen also offered staunch resistance and it meant for a final-day thriller between Garryowen and Galwegians in Crowley Park, which the home side edged to win the league with just two points to spare.
They open this season at home to Cork Con on September 12.
Former Connacht prop Brett Wilkinson took the reins at Buccaneers recently.
Buccs never got going last term and finished seventh in Division 1B, while Corinthians were relegated.
They will compete in Division 2A this season, with Sligo in the newly formed Division 2C.