On the day prior to each game, CFL rules dictate that each team must declare their 46-man roster.

One hour prior to kickoff on game-day, two players are declared reserves and a 44-man roster consisting of 21 National players, 20 International players and three quarterbacks is submitted to game officials and exchanged between clubs.

You can download the game notes and roster for each regular season game at the links found below the morning prior to game day:

Preseason A Thursday, June 8th vs Montreal Download
Preseason B Friday, June 16th @ Hamilton Download 
Week 1 Sunday, June 25th vs Hamilton Download  Download
Week 2 Friday, June 30th vs. BC Download  Download
Week 3 Saturday, July 8th @ Ottawa Download  Download
Week 4 Thursday, July 13th @ Winnipeg Download Download
Week 5 Monday, July 24th vs. Ottawa Download  Download
Week 6 Saturday, July 29th @ Saskatchewan Download Download
Week 7 Thursday, August 3rd vs. Calgary Download Download
Week 8 Friday, August 11th @ Montreal Download Download
Week 9 Saturday, August 19th vs. Montreal Download Download
Week 10 Saturday, August 26th @ Calgary Download Download
Week 11 Monday, September 4th @Hamilton Download  Download
Week 13 Saturday, September 16th vs. Edmonton Download Download
Week 14 Saturday, September 23rd vs. Montreal Download Download
Week 15 Saturday, September 30th @ Hamilton Download  Download
Week 16 Saturday, October 7th vs. Saskatchewan Download Download
Week 17 Saturday, October 14th @ Edmonton Download Download
Week 18 Saturday, October 21st vs. Winnipeg Download Download
Week 20 Saturday, November 4th @ BC Download Download
Eastern Final Sunday, November 19th vs. Saskatchewan Download Download
Grey Cup Sunday, November 26th vs. Calgary Download Download