A community fork of Google Fuchsia has emerged called dahliaOS. Apparently it runs on both the native Zircon kernel optionally the linux kernel. There is even an opportunity to run a session in the browser.
The browser session suggests that the visual design and the range of programmes are not a patch on those of Haiku. I would definitely use Haiku on the desktop in preference to Dahlia. Nonetheless the underlying technology and what it represents is probably of more interest to us.
My own understanding is that Fuchsia was written by many former Beos engineers and offers many of the technologies that Beos might have pioneered if it had kept going. As such I feel that if DhaliaOS becomes viable, consideration should be given to building Haiku on Dhalia underpinnings after R1.This would bring the better desktop design, longer established native codebase and community of Haiku to what would seem a more modern system design.