Need for Speed Community Manager Max Myrus has confirmed that the servers for five older titles in the franchise will close at the end of August. Need for Speed Carbon, Need for Speed Undercover, Need for Speed Shift, Need for Speed Shift 2: Unleashed, and Need for Speed The Run will also be delisted from the PlayStation Store beginning today, May 31st.
All five titles will have their respective servers closed on August 31, 2021. At that point, all online races and other online features will be inaccessible. All offline features will still be playable after September 1. As is usual with all titles whose servers are due to close imminently, the in-game stores close at an earlier date; in the case of these five games, their in-game stores are closing today, May 31. Myrus went on to detail the reasons why the servers were closing:

Decisions to retire games are never made easy, but we are now shifting gears to focus on the future of Need for Speed. The development teams and operational staff have put a lot of time and passion into the development, creation, release and upkeep of the game over the years, and we love to see you play. But the number of players has come to a point where it’s no longer feasible to continue the work behind the scenes required to keep Need for Speed Carbon, Need for Speed Undercover, Need for Speed Shift, Need for Speed Shift 2: Unleashed and Need for Speed The Run up and running. We hope you have gotten many victories, satisfying drifts, momen...