In keeping with its naming schemes, where fewer digits denote higher-end models, Canon has effectively demoted its basic EOS M10 mirrorless to M100 in conjunction with its two-year update. It's an odd choice since there isn't a lot of room for differentiation between the M5 and M6 and the M100 that would merit opening up a naming gap -- hopefully, that means there's a change coming.
The company's renamed replacement for the EOS M10 seems like a stripped-down version of the M5 and M6.