My H also doesn't communicate very well so if he has decided to work on our relationship it is likely that he wouldn't even tell me, I would see changes through his actions.
You know this is how I thought my W would be too, and guess what, she is. If you know this about your H, then you need to either get him to communicate or relax your paranoia (well deserved btw) and learn to really SEE what he does. I don't mean analyze it to death, I just mean pay attention to his actions. You may find, that like my W, your H is now doing a lot of the things you would have given anything to have him do early on in all this. I think what happens to us is that over time we get greedy (again, justifiably due to what we now know about being in control of our own happiness) and despite all we know about NOT holding expectations, we expect it all to come rushing back once the first trickles start to flow. I know I am about to post to my thread and NOT take my own advice (lol) but if you can, then at least one of us is benefiting from it. I am not saying to let your guard down, just to do more than peek from behind it. Remember there is a lot written about getting what you give so try to give a LITTLE trust in the form of not obsessing over some of the things you see and see what you get in return. Not knowing is scary. I know it is, but fear can do no good right now.