Mozilla sent Firefox Version 150.0.3 to the release channel.
The update includes four security updates, all which are rated critical. The security updates can be reviewed here (https://www.mozilla.org/en-US/security/advisories/mfsa2026-45/).
One fix is included in the update which fixed an issue where characters entered into password fields could appear unmasked in print preview and printed pages (Release Notes (https://www.firefox.com/en-US/firefox/150.0.3/releasenotes/)).
Update: To get the update now, select "Help" from the Firefox menu and pick "About Firefox". Mac users need to select "About Firefox" from the Firefox menu. If you do not use the English language version, Fully Localized Versions (https://www.mozilla.org/en-US/firefox/all/#product-desktop-release) are available for download.
Rapid Release Calendar (https://wiki.mozilla.org/Release_Management/Calendar)