User blog comment:BertH/Fluid layout is arriving on December 4/@comment-452-20131202163641

Some advice for everyone: save a copy of a few pages on your wiki so you can take a look at them after Fluid is enabled.

There's a few little changes you may not be expecting, so if things end up looking "wrong", it will be much easier for you to work out why if you have a saved copy to compare.