There are some changes that will be brought to light w.e.f MAY 2021.
Core Web Vitals- Pages must provide a good experience in different aspects.
Largest Contentful Paint- It is the loading time of your website and it should not exceed 2.5 seconds. It means your page that has the largest content should take not more than 2.5 seconds to load.
First Input Delay- It means the visitor should not take more than 1 second for making an input such as clicking a button on your website. It should be interactive.
Cumulative Layout Shift- There should not be any unexpected shift in layout or sudden pop-ups should not cover the whole page.
Mobile-Friendly- Your website should be mobile-friendly and provide a good user experience. Do the mobile-friendly test.
Safe-browsing- The website should not contain malicious links and downloadables
HTTPS- The website must be secure
No intrusive content- The contents on your website should be easily accessible to the visitors and be obvious to the user.
Check out the whole blog by Google here.