I know that because I actually read the first post in this topic. It would have been idiotic to have done all that work to get the Linux engine ported, and then simply abandon the whole thing without updating to a current code base. If there were no EE there would only be one code base to update to.

Plans are not promises, and Kickstarter does not exempt games from the normal development processes, which can, and very often does, include delays, changes and dropped features.