Which lens will Canon upgrade next?

cberry wrote:

Which do you want upgraded and which is most likely to get an upgrade?

I anticipate the following STM lenses by the end of 2015.

EF 17-40 IS STM
EF 70-300 IS STM
EF-S 18-200 IS STM
EF-M 50 or 60 mm f/2.8 IS Macro?

Canon has been releasing 3-4 STM lenses a year since 2012.  With at least a EF-M mount everyh year.

2012
EF-M 18-55mm IS STM
EF-M 22mm f/2 STM
EF-S 18-135mm IS STM
EF 40mm f/2.8 STM

2013
EF-M 11-22mm IS STM
EF-S 18-55mm IS STM
EF-S 55-250mm IS STM

2014
EF-M 55-200mm IS STM
EF-S 10-18mm IS STM
EF-S 24mm f/2.8 STM
EF 24-105mm IS STM

And assume a similar release, I presume they will release 3-4 in 2015. Although there is a L version, they released a EF 24-105mm IS STM. They may not replace existing L or USM lenses, just augment with STM lenses.

It makes sense that Canon would release a wide angle full frame and a telephoto full frame STM lens to support an entry level full frame. I could see the following set up:

Mirror Less (EOS M/M2)
EF-M 11-22mm IS STM, wide
EF-M 18-55mm IS STM, normal
EF-M 55-200mm IS STM, telephoto
EF-M 22mm f/2 STM, low light

Crop Sensor
EF-S 10-18mm IS STM, wide
EF-S 18-55mm IS STM, normal
EF-S 55-250mm IS STM, telephoto
EF-S 24mm f/2.8 STM, low light

Full Frame
EF 17-40mm IS STM, wide [PROPOSED]
EF 24-105mm IS STM, normal
EF 70-300mm IS STM, telephoto [PROPOSED]
EF 40mm f/2.8 STM, low light

I assume/hope Canon will release a macro lens for the EF-M line.  Since there is a EF-S Macro as 60mm and f/2.8, I could see a similar one, 50mm f/2 STM could be an option too.

The 18-200mm IS looks like a natural replacement for a STM lens since it was released in 2008. Other EF-S lenses could get the STM treatment.