Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.Bombardier announced on Wednesday that Delta has signed a firm agreement to buy 20 CRJ900 regional jets — making it the launch operator of Bombardier’s new Atmosphere cabin for CRJ Series regional jets. The actual price paid by Delta for the 70-seat planes hasn’t been announced, but the order is valued at about $961 million based on the list price.The new Atmosphere cabin will offer an enhanced passenger experience with bigger overhead storage bins, wider aisles and mood lighting. According to Bombardier’s release, the planes will be fitted with “a comfortable two-class regional jet configuration with 70 seats,” which is six seats less than what American Airlines plans to install on its new CRJ900s.The first deliveries of the CRJ900s are set to take place in late 2018 — before American begins taking delivery of its new planes in the second quarter of 2019 — and will fly under the Delta Connection brand, a wholly owned subsidiary of the carrier.Although, Bombardier has struggled to keep its CRJ program afloat as it focused more on its new C-Series program, this order brings the number of recorded firm orders for CRJ Series aircraft up to 1,953. Airbus will own a majority stake in the C-Series aircraft, effective July 1.