https://thenextweb.com/distract/2020/05/20/ea-to-release-source-code-for-command-and-conquers-tiberian-dawn-and-red-alert/

Modders rejoice! EA today made the surprise announcement that the .dll files and corresponding source code for RTS classics Command and Conquer Red Alert and Command and Conquer Tiberian Dawn would be released into open source.

Interestingly, the announcement came via a Reddit post related to the upcoming Command and Conquer remaster collection: