Overwatch Season 17 will end earlier than expected according to the official forum. In mid-July, players were warned that this season would be shortened to setup Role Queue in competitive mode more quickly. Sigma may also come to live servers during this update (source).
Season 17 Rewards
SR 1-1499 (Bronze): 65 CP
SR 1500-1999 (Silver): 125 CP
SR 2000-2499 (Gold): 250 CP
SR 2500-2999 (Platinum): 500 CP
SR 3000-3499 (Diamond): 750 CP
SR 3500-3999 (Master): 1200 CP
SR 4000-5000 (Grandmaster): 1750 CP