User blog comment:Dammej/A glimpse of the future (of the wiki)/@comment-1891865-20100924063951/@comment-1891865-20100924220345

Check out Page 3 of the FAQ. It is specifically mentioned at this page:

http://community.wikia.com/wiki/The_new_look_3

To quote:

How long will Wikia support Monaco? While we don’t have an exact timetable we will continue to support Monaco as a personal preference while we complete the rollout of the new look and ensure that it is completely stable. During this time you will be able to switch between Monaco and the new look in order to transition between the two. Once we determine that everything is stable and there has been ample time to transition we will remove the Monaco personal preference.

So yeah, we will be given a transitional period until the new skin is fully stable, then Monaco will be phased out.