I have preordered this while being drunk some time ago :D
After about 30 hours in I can say it's a good, casual, "I have a spare hour now" type of game. Combination of minecraft and space exploration. Nothing serious, just arcade type of game. The main gameplay is about exploring various planets and POI's on them, mining for resources and then managing those resources to upgrade your equipment. Apart from that you can also trade and fight. The former is a good way to get missing resources for your upgrades, and mining rare resources and then selling them is a good way to earn money.
There is also alien languages learnig and that helps you communicate with other races.
There is some storyline that involves getting to the centre of the galaxy and another one that involves finding a mysterious Atlas (whatever that might be). Or you can go wild and just freely explore the universe.
Flight model is VERY basic and it's a lettdown for me, I hoped for something more sim-like. You can't even crash the ship against a planet :P
I thought I won't like the the graphical style, but it's actually very fitting with the gameplay style. I like it! I disagree with the "samey planets" criticism - to me the planets are quite different to each other. The flora is a bit samey indeed, but the actual planets are not. I came across jungles, deserts, forests, caves, oceans, archipelagos, mountains, all sorts of varied terrain and features. Fauna can get a bit werid sometimes, but mostly it's OK.
Audio is OK, music is good and enhances the immersion.
I didn't really have any expectation for the game so maybe that's why I actually like it and I'm not disappointed. The only criticism I'd have is that the price is way too high for what you get.
Final verdict, based on what I've seen so far: I would definitely recommend the game to players that like crafting and exploration in a sandbox environment, but I woulnd't recommend playing the hell out of it, as it can get samey. I'd rather play in short bursts and don't take the game too seriously.
Oh, I forgot to add - the game also supports modding and works offline - the only online bit you need it when uploading your discoveries to the main database for others to see.
And for the end - some nice photos from me :)
And here's a creature that reminds me a lot about my dog that was put to sleep last year due to a liver cancer. In a tribute to my dog I called this creature Guernica :)