For anyone a bit confused with the positioning of the M10, M6 and M5 cameras (and the 7 native EF-M lenses), here's how Canon sees them:
Canon’s expansion into the compact, interchangeable lens category hasn’t been as rapid as some competitive brands, but the 2017 launch of the EOS M6 camera rounds out the line and gives a clearly identifiable progression of models, targeting different customer preferences. These can be very effective choices for new customers, especially younger users who until now have relied upon mobile devices like smartphones for their photography — but who realize better quality and more versatility is possible, if they step up to an interchangeable lens camera. Many of the same Wi-Fi® capabilities they’ve grown to depend on for quick image sharing continue to be possible with the EOS M-series models. And, for the more experienced photographer who simply wants a more portable alternative to their DSLRs — with similar image quality, and lens interchangeability — again, the EOS M-series has much to offer them. While in no way replacing Canon’s extensive EOS DSLR line, the EOS M10, M6, and M5 broaden the options for a wide range of potential customers, with performance, features and most of all flexibility.
http://www.learn.usa.canon.com/resources/articles/2017/eos-m6-whatsnew.shtml
Canon’s expansion into the compact, interchangeable lens category hasn’t been as rapid as some competitive brands, but the 2017 launch of the EOS M6 camera rounds out the line and gives a clearly identifiable progression of models, targeting different customer preferences. These can be very effective choices for new customers, especially younger users who until now have relied upon mobile devices like smartphones for their photography — but who realize better quality and more versatility is possible, if they step up to an interchangeable lens camera. Many of the same Wi-Fi® capabilities they’ve grown to depend on for quick image sharing continue to be possible with the EOS M-series models. And, for the more experienced photographer who simply wants a more portable alternative to their DSLRs — with similar image quality, and lens interchangeability — again, the EOS M-series has much to offer them. While in no way replacing Canon’s extensive EOS DSLR line, the EOS M10, M6, and M5 broaden the options for a wide range of potential customers, with performance, features and most of all flexibility.
http://www.learn.usa.canon.com/resources/articles/2017/eos-m6-whatsnew.shtml