The update brings in several fixes and UI/QoL improvements, based on the players' feedback. The most notable among them is the completely redesigned Estimator Tool and new wiki (but there are others, too).
Estimator is not a tool that only covers the most basic cases anymore. It has become an ultimate trail-making (or planning) solution, whether you need to create a long new trail that curves around the mountain or a short bridge between existing trails. It is capable of planting multiple points for more flexibility. Here's a short gif demo of the new tool:

Octohill now has brand-new public wiki. It has some useful information and guides, feel free to browse (and add more stuff to it)! You can access it through the "Wiki" in-game button from main menu and help pages, or through this link: octohill.wiki.gg.
Among other things, the update also adds new hotkeys (camera rotations and overlays). For new players they will have default mappings, but if you've already launched the game you need to map them yourself (in Options->Controls). The recommended mappings are for camera rotations and [5]-[=] for overlays, but you can assign them to anything you want, of course.
Hopefully, now I'll (mostly) focus on preparing new content. There's a long list piled up, probably it will be shaped into two or three major updates over the longer time span. So no details on what the next update will include yet. Stay tuned for more information!