The Zuffa logo still appears in UFC broadcasts. This demonstrates that, despite the announcement, the sale has not closed yet. There's a tiny chance as per Meltzer and others that the sale may never become a done deal. In any event, WME is not fully in charge of the UFC hence why we have not seen any major changes. Those are still to come. They need to get rid of the 125 and 135 pound hobbits.