User blog comment:Cristina7/Introducing Discussions, a New Platform For Engaging Your Community/@comment-5275700-20160909212124/@comment-1370845-20160910022537

"Really? Because if history is anything to go by, Wikia doesn't do this." When releasing new features? Normally they are released early and (relatively) incomplete, which happened with Discussions. But they're released in early versions so that Staff can pick up on what features are lacking, which ones are most needed, and how best to allocate development time. This is one common practice in software development, and an alternative to trying to release a big product later.

But that's different from replacing old features. Wikia took quite a while to release Oasis (and it still had issues when it happened...) and they were going to take a long time to migrate people to Message Wall (before they eventually decided against doing that). They will take a while with this, and won't migrate until people are happy with Discussions. I'm willing to eat my words if I'm proven wrong here, but I imagine that's what they'll do.