wondering about firefox 57


people have been updated even though they set firefox to not update. is there an option to also include betas for upgrades? maybe this is why this is happening. i didn't find anything in the settings.
i say this because even on the mmazila page the only download they have is version 56 even after i installed it i checked for updates and firefox said i had the most current version.
but it did not give me the option to do a mobile installation. is there another mobile site to download from?
i use to have the 2 choices when installing firefox directly.

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