Over the next week or two, you may notice (or have already noticed) a few small differences around the Steam page(s) of Inertia.
First and foremost the Workshop is now public for Inertia, ahead of v0.9, which implements a level creation tool known as the 'Creator' as well as Steam Workshop support. There will be a guide published before the patch goes live which goes over how to use the Creator and how to upload your levels to Steam Workshop directly from Inertia.
You may have also noticed that there are a couple of new hidden achievements, they are achievements for v0.9, however I decided to push them live early to ensure they work as intended.
Assuming all goes well, the update should release on the 4th December 2017.