What Happens Next is the eighth studio album by English post-punk band Gang of Four. It was released on 24 February 2015 through Metropolis Records and Membran record label. It is the band's first album to feature John "Gaoler" Sterry on vocals, following vocalist Jon King's departure, which left the guitarist Andy Gill as the sole original member of the band.

Based on the paragraph above can we conclude that "As of February 24 2015, the band Gang of Four had just one founding member remaining"?
Yes