The LineageOS team has announced that starting tomorrow, their new 15.1 build will be released to select devices. This build is an important milestone as it brings the Android variant up to Oreo 8.1 as the base.
We’ve been working hard these months to get this new version available; the changes that were done in upstream (AOSP) are huge: Project Treble changed the way hardware is managed in Android, so all the OEM-abandoned platforms that are supported by Lineage had to be adapted for the new platform. Moreover, we’ve taken the time to make the code future-proof by converting a lot of our hardware-related code to make use of the new Treble capabilities: things such as LiveDisplay and lights (leds) control are now up to date with the new Android standards, so we’re going to have an easier time forward-porting stuff whenever a new Android version comes out.
Along with the update to Oreo 8.1, there are also some new features that have come along in this build. Styles allows you to change the accent color that will also change from a light to dark theme based on the time of day (if enabled).