Microsoft has reintroduced its Xbox All Access program for customers in Australia, the UK, and the US. The regular subscription scheme includes the opportunity to upgrade to Project Scarlett in Holiday 2020, and there is also a limited time deal for UK/US Xbox One X buyers to sign up to get their hands on the next-generation console.
https://www.notebookcheck.net/Join-Xbox-All-Access-now-and-get-an-upgrade-to-Project-Scarlett-in-2020.440513.0.html