Although we can't image it with current technology (JWST and Hubble both have resolution of 100 milliarcseconds) we might be able to within a few years.
IR inferometers will be able to give us some data in just a few years, and the E-ELT/TMT will also let us "image" it. The "image" won't be anything you can really look at (E-ELT has resolution one milliarcsecond) but it'll give us important data.
In the medium term a 22 GHz radio interferometer using the sun as a gravitational lens would be able to resolve 80 km diameter water clouds on Proxima b. This talk by the inventor of the concept for SETI purposes explains it pretty well: https://www.youtube.com/watch?v=ObvKVe5H8pc
The real trick is getting out 600 AU to the gravitational focal line for the light opposite proxima centuari and staying with ~10m of it via station keeping. The only medium term solution to get out there in under 20 years are electrostatic solar sails. See Bruce Wiegmann of NASA Marshall Space Flight Center's talk from yesterday on the Heliopause Electrostatic Rapid Transit System. http://livestream.com/viewnow/NIAC2016/videos/133764483
IR inferometers will be able to give us some data in just a few years, and the E-ELT/TMT will also let us "image" it. The "image" won't be anything you can really look at (E-ELT has resolution one milliarcsecond) but it'll give us important data.