The New EOS M Firmware in Action
www.canonrumors.com/2013/06/the-new-eos-m-firmware-coming-soon
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
This camera is very interesting to me but the AF issues have been a big problem. Good news that this may be going away.