Mac Question about Xcode versions available?

tk_mac

macrumors member
Original poster
Dec 26, 2019
49
7
I was at https://developer.apple.com/downloads/more and noticed a bunch of old Xcode versions given fresh dates in December 2019. Would anyone know why these were rereleased? Did the originals of these have expired security certificates like the old Mac OS installers that were rereleased in October?