I've silently opened up Early access now. Once you create an account you get redirected to a page where you can pick a plan.
There is a free plan available where you can create roads, kerbs, walls, trees, modify terrain and just get to know the software. But you are limited to just 3 exports.

Paid plan is a one-time purchase and gets you access to everything. So the full track editor with all functionalities, and also access to all tools to create your own buildings, signs, upload your own textures, import 3d models, create decals, cliffs. And also the KN5 track importer so you can learn from the greats.

I'll be squashing some bugs the coming days and closely monitor servers with the increased user numbers. And add more road textures, models and terrain textures. If you run into any bugs or have feature requests, feel free to use the form in the editor to report, join the discord or use the contact page.

Once I feel more comfortable with the state of the editor I will start creating tutorial videos. For now, please read the documentation.

Thanks everybody for the support!