Don't you think your boss gave you the ideal opportunity to ask questions when he said 'With all the changes going on ....'  You've been asking the question in here, why not ask him?  I would.

And then you have to decide.  You say you're not happy in this role.  Do you want it or find something else?  

If you decide you want to stay, you need to find out what's going on and roll with it.
Or decide to cut your losses and find something else and go.

I know and understand that you don't want to leave without something to go to, but if it were me and I was as unhappy as you appear, I would be phoning, not just the agency that found me this job, but the others around, to see what's out there.  Things do appear to be starting slowly to pick up and it may be a good time to move...