According to Jay Morrison, who covers the Bengals for The Athletic, the Steelers will host the Bengals in Week 3. In addition, the Steelers reportedly host the Browns in Week 17 and the Ravens in Week 18, per Morrison.
Below are the Steelers games that we know of right now in 2021. Only the Week 1 game against the Bills is official.
Week 1, Sept. 12: at Bills, 1 p.m. ET
Week 2, Sept. 19: vs. Raiders
Week 3, Sept. 26 vs. Bengals
Week 4, Oct. 3: at Packers, 4:25 p.m. ET
Week 5, Oct. 10 vs. Broncos
Week 6, Oct. 17: vs. Seahawks, 8:20 p.m. ET
Week 9, Nov. 8 vs. Bears 8:15 p.m. ET
Week 14, Dec. 9 at Vikings 8:20 p.m. ET
Week 17, Jan. 2 vs. Browns
Week 18, Jan. 9 vs. Ravens