Firefox 90 release overview: Windows background updates, compatibility improvements

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Firefox 90.0 is the latest stable version of the Firefox web browser. It will be released later today July 12 2021  and most Firefox installations will pick up the update automatically.

All other Firefox channels are updated around the same time. Firefox Beta and Developer editions are upgraded to Firefox 91, Firefox Nightly to Firefox 92, and Firefox ESR to 78.12. For more info go here   https://www.ghacks.net/2021/07/13/firefox-90-release-overview-windows-background-updates-compatibility-improvements/

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How Firefox's new SmartBlock feature works 
Mozilla introduced the privacy feature SmartBlock 2.0 in Firefox 90, which it released two weeks ago. SmartBlock is part of Firefox's Tracking Protection feature, which is designed to reduce user tracking while using the web browser.

To better understand what SmartBlock is and does, it is necessary to understand how Tracking Protection works in Firefox.
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https://www.ghacks.net/2021/07/31/how-firefoxs-new-smartblock-feature-works/ - July 31, 2021

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[Tip] Disable Automatic Background Updates Feature in Mozilla Firefox
https://www.askvg.com/tip-disable-automatic-background-updates-feature-in-mozilla-firefox/

[Software Update] Mozilla Firefox 90.0 Now Available for Download
https://www.askvg.com/download-mozilla-firefox-latest-version/

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https://www.mozilla.org/en-US/firefox/90.0/releasenotes/