Agree with WhyUs. Don't say a word about moving. Just keep doing what you've been doing. But don't assume that just because she hasn't brought it up, or because you haven't seen any signs, that it isn't still happening. A lot of guys make those assumptions, and develop expectations, then are floored when the W actually starts moving out as she said she would.
Me 47 W 42 T 24 yrs M 18 yrs W living with OM BD1: 3/7/2015 (A with OM#1) BD2: 4/11/2015 (A with OM#2, W moves out) WW filed for D, papers received 9/18/2015. Meeting to determine child custody 9/29/2015.