Greetings, SEGA fans! We've got some news to share regarding our Classics bundles. As of December 6th, 2024 we'll be saying farewell to new purchases of the SEGA Mega Drive and Genesis Classics & Dreamcast Classics. Both of these great bundles and select individual games will be delisted on Steam December 6th. No worries if you already own a game or bundle. These gems will still live in your Steam library.
Seems very unlikely this is a rights expiry issue, so I would imagine they’re clearing out to make way for new ports at some point next year.