"Expiration Treaty" now requires the later Alliance Tech. Also increased the relations level required to get it.
Is this a new treaty that expires.
The "Exploration Treaty" is now limited to one per faction
Wish this wasn't case but, I understand as having many of these slows down the game, performance wise.
When clicking the next/back arrows in the Trade screen, it will now switch between any factions you can trade with and keep you on that screen (instead of taking you back to the initial conversation screen).
Yes this awesome 
MP Lobby improvements
When joining a multiplayer lobby (or someone joins a lobby you're already in) and the game starts sending custom factions from player to player, a "Loading Factions" message will appear and prevent players from interacting with the lobby until loading is complete."
Player names are now colored the same as their faction's color
Fixed an issue where the "Loading Custom Factions" text would appear when a player joins a restored session.
The game host can now edit a lobby's map and gameplay settings while in the lobby.
Single and multiplayer game and galaxy settings are now independent. That is, the game will remember separate galaxy size setting for single and multiplayer games.
When Ready in the lobby, you can no longer change your faction or team.
When Ready in the lobby, clicking the Ready button again will unready you.
Fixed the player names sometimes appearing as white in the chat window in the lobby.
Increased the scroll speed of the player list in the lobby.
Disabled the mouse wheel behavior for the "AI Intelligence" and "Team" spinners, so it doesn't stop the scrolling behavior of the list.
Yes to all of these, I can't wait to try this in action 
Thanks for a lot of these tweaks, can't wait to see what the Expiration Treaty does 