Does this mean something? or mean something today and tomorrow who knows?
Yes, it means that your problems aren't escalating and that your work has drawn him into initiating. Will he sustain it? That one is harder to predict. Hard to have no expectations, but focus on sticking to your plan and seeing if there are repeats of this kind of thing to show you if he is truly headed in the right direction and that your steps are bearing fruit.
Me: 50 W:43 S6, S3 M: 12 yrs. T: 17 M is bad & Not happy Bomb Mar '14 S 5 Feb '15 D Bomb 13 Apr '15 (but "no hurry") DB Coach May '15 Wants proceed on D Aug '15 Starting 1-on-1 negotiations Sept '15