Congratulations to the Haiku team. Back when Be closed its doors, I remember there were several projects to recreate the OS, but most people didn't expect any of them to succeed. This announcement proves that wrong. BeOS was a fantastic OS and with Haiku making strides toward a stable release, the legacy can live on. Although it's taken a while to get this far, writing a full operating system from scratch takes a long time. Even large companies with dedicated teams generally take 5+ years to build a new OS, so 8 years for a group of volunteers to release a working system is quite reasonable.
Once again, congratulations and thanks for all the hard work you've put in over the years. Although only an alpha, this release is quite stable and usable. Your efforts have certainly not gone unnoticed.