It’s built from scratch, therefore has no parent project. Sure, this means it’s incompatible with rpm and deb. But it also means it’s completely free of external influence, policy, and companies/organisations pushing their own agenda. We’re free to call the shots, control all the gates, and ensure a single integrated experience. Combined with our focus on autonomy (and a waterfall development model) we can push security updates and bugfixes to our users in the shortest possible timeframe. We’re also free to compile our source code how we see fit, tying in with our own optimisations and security changes.
Cool thing is that it is already available for download.