I have been told (thanks) that the upcoming EF-M 15-45mm f/3.5-6.3 IS STM will have a very compact design. I did not grasp if the source meant it will just be a very compact lens, or if the lens has a retractable design, like the EF-M 11-22mm IS STM.
The EF-M 15-45mm f/3.5-6.3 IS STM is likely going to be the next kit lens for the EOS M3. We had some rumors pointing in this direction. Moreover, in Europe the EOS M3 is available only with the 18-55mm IS STM lens. Look like someone want’s to empty stock. The 18-55mm IS STM looks also a bit outdated when compared to other kit kens offering.
There will be more native EOS M lenses soon, a recent rumor suggests. The announcement of the EF-M 15-45mm f/3.5-6.3 IS STM, together with the EF 35mm f/1.4L II (leaked yesterday) and the Rebel SL2 is expected in the next days, so stay tuned on Canon Watch to not miss anything.