Yeah departures is hell at the moment- never seen it quite as crowded as it was earlier this week when I was there. The queues for the gates snaking everywhere is just a little bit silly.
Western Walkway opens next month, but as I am sure you know, has no seating or other facilities (As the airport is not allowed to put them in there!)
Some of the toilet facilities have been upgraded, but they are taking their sweet time about it...
The new walk-through Duty Free shop also looks really good, and I believe the work there should be completed next month sometime.
I think that covers the current round of improvements... No idea when the yay/ nay decision is on the big expansion though.