We are re-evaluating the ring promotion criteria to allow more builds to reach Windows Insiders. The new criteria will be much closer to our criteria for flighting to our internal rings, which means more builds will pass it and be released externally to the Fast ring. This also means however that the builds we release to the Fast ring may include more bugs and other issues that could be slightly more painful for some people to live with
. It’s a tradeoff – as the thing that throttles the rate of builds is the promotion criteria.