Brad posted this screenshot from the alpha (pre-alpha?) over in Discord today. I imagine at least some aspects of it will change between now and then, but there's still a lot of info that can be gleaned from it.
Some thoughts & observations (in no particular order):
* Aside from that it looks nice, I like how the game remains recognizable as GalCiv overall, yet is still clearly a new game. No one is going to accuse GC4 of just being a reskinned GalCiv3. (GC3 is often criticized for looking -- and feeling -- too similar to GC2.)
* Hexes are either gone, or at least hidden; i suspect the latter. Personally, I like this change -- removing hexes improves the aesthetic (and thus immersion) -- but some folks are definitely going to miss them. Perhaps there will be an option to enable/disable them?
* You can see that Earth is a "core world" (a planet assigned to a governor, thus allowing you to manage it directly), with multiple "colonies" feeding resources to it. Mars is one such colony, with the rest being off-screen.
* The 4 main icons above Earth and Mars denote (from left to right): minerals, research, wealth, and food. Brad said there will eventually be a 5th icon added, for "culture". He didn't elaborate, but I suspect that Culture might be what Influence was in GalCiv2 and GalCiv 3.
* Although Brad has said he's personally not fond of them, it appears asteroid mining bases are still a thing, based on the blue lines linking the asteroid fields and Earth.
* The "Missions" list in the upper-left corner appears to be somewhat similar to
Stellaris' situation log (that tracks anomalies, event-chains, etc.). These are, presumably, some of the story/lore-based content that is finally(!) being incorporated into the sandbox game (instead of always locked away in separate campaigns no one plays) to help give players a sense of story and immersion.
* I see the "Notifications" (just below the Missions) from GalCiv3 are back, which is welcome. However, it would be nice if this time around, clicking (or double-clicking) on them would take us to the relevant location or menu.
* The four citizens/leaders on the bottom (at least, that's who I presume they are): I can't figure out if their character cards sitting there means they're already hired and working for you? Or if they're still available for hire, but you haven't recruited them yet? I lean towards the former, but I could easily see that still being the latter as well.