Mozilla developers have released Firefox 56.0.1. This browser update is available for Windows, Linux and macOS. There are new functions and a change.
The release notes documents the following fixes and changes:
- Fix: Block D3D11 when using Intel drivers on Windows 7 systems with partial AVX support (bug 1403353)
- New: Users of 32-bit Firefox on 64-bit Windows are migrated to 64-bit Firefox for increased stability and security.
But there are a couple of non fixed issues:
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Due to a bug in Mac OS X High Sierra, fullscreen mode has some issues
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Startup crash with RelevantKnowledge adware installed. Firefox Support has helpful instructions to remove it.
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Users running Firefox for Windows over a Remote Desktop Connection (RDP) may find that audio playback is disabled due to increased security restrictions. Learn how to mitigate this issue until it is corrected in an upcoming release
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Startup crashes with 64-bit Firefox on Windows 7, for users of Lenovo's "OneKey Theater" software for IdeaPad laptops. To fix this crash, please re-install 32-bit Firefox.
Download-Links may be found at this neowin.net article. My Firefox 56.0 portable doesn't offers an update yet.



"Users of 32-bit Firefox on 64-bit Windows are migrated to 64-bit Firefox for increased stability and security." – Definitely NOT!
Hm, I got mixed feedback. While many didn't received the update, some reported, that 32 bit FF has been upgraded to 64 bit.
Week later and I still remain on 56.0 – I have not been auto-updated.
Interesting