Microsoft has released a new app that will let you know if you computer is officially supported on Windows 11, it provides more information that the original app. Even if your computer is not officially supported you should still be able to install Windows 11 but might miss out on future updates. There is a direct link to the app in the following article
My PC isn’t officially supported, I have a Intel 6th gen CPU but my motherboard supports Intel 7th gen CPUs which are officially supported so the only thing I need to do is upgrade my CPU. My laptop is good to go.