The Solus Team has done some extra work in manually sending out beta ISO information to new OC backers as a thank you for helping us test. Given all the updates we've made, and new hardware in the wild, we felt it was best to get testing from a wider audience. We are grateful to all you beta testers, you help us make a more stable distro for everyone.
Manual ISO emails were a one off thing. Going forward, we will go back to our normal process. Beta ISOs will be released to existing Open Collective backers. It is not tenable for us to manually send out individual ISO emails every release. Also, the beta ISOs are a way we help thank people for contributing to us financially and keeping the lights on. Anyone wanting to access beta ISOs for 4.5 is encouraged to support us through OC.
The public release ISOs will be published very soon. Keep an eye on the forums and social media for the announcement.