[kovidgoyal]

Not any time soon no. The python 3 port is nowhere near ready. If and when it is ready, there will be a long period when both python 2 and python 3 builds of calibre on all platforms will be available so people have time to port plugins and find regressions in the python 3 port.

At the moment the plan is that when the python 3 port is ready and many plugins have been ported, I will stop releasing python 2 builds and all future calibre releases will be python 3 based.

Note however that this is very early stages, these plans might change depending on ground realties. The one this that is certain is that I do intend to provide at least a few months for plugin porting.