On November 1, 2016, NBC announced that WBTS-LD will be the new NBC station for Boston replacing WHDH effective January 1, 2017. On November 10, WBTS-LD and WNEU-DT2 began to carry a transitional programming service branded as Countdown NBC Boston. The service was designed to promote the switch and assist viewers in locating NBC Boston's over-the-air channels, it featured NBC Boston's future syndicated programming, programs from Cozi TV, and newscasts simulcast from NECN. The NBC Boston website and social media outlets were also launched at this time. WNEU will remain Telemundo O&O for the Boston market.
On August 8, 2019, WBTS and WYCN swapped call signs, with channel 8 becoming WYCN-LD and channel 15 changing to WBTS-CD. In October 2019, WYCN-LD moved its transmitter to Norton, Massachusetts, switched from NBC to Telemundo, and also changed its city of license to Providence, leaving WBTS-CD as Boston's sole NBC station.