How does Microsoft roll out changes to Power Apps?
Instead of rolling out updates globally, Microsoft applies updates incrementally to different regions using what they call the "Safe Deployment Process".
The "Safe Deployment Process" applies updates initially to regions where there are fewer users, or regions where an outage will have less of an impact.
The top of this list includes regions such as Canada, India, and South America, and regions that are last to receive updates include the UK, Europe, and the US.
This explains the trend that we often observe on the forums, where users from the Canadian region are first to report bugs that are not re-creatable by other users.
The release version documentation illustrates the implementation of this release cycle. Notice in the screenshot below how Canada, India, and South America have received v9.2 22015 before Europe and the US.