we have updated the game preview page on our website. There is now a set of brand new screenshots from the game. These were taken in Factorio 0.6.x, the current experimental release. The old screenshots were more than half a year old and they were really obsolete. A lot of graphic placeholders has been replaced since then and many new assets were added. There is still a long way to go. However the artistic direction of Factorio has more or less stabilised and we now know where we are heading.
Probably the biggest change that strikes the eye are the new color tones of the terrain. The terrain now looks more uniform and smooth, though it is still not a final version. Our artist is experimenting with new terrain meshes and variations. On top of that there will be a set of various objects (doodads) to make the environment more variable and interesting to explore. Things like wrecks of space ships, remnants of dead creatures, ruins left behind by the native civilization, different fauna, etc.
Apart from the new screenshots there is an update of the theme pictures as well. Now there is a collection of 1 + 5 theme pictures capturing some essential concepts from Factorio. These are available as wallpapers for Furnace Attendant or higher member tiers.