As the last release of Python 2 is finally out, the July release of Pywikibot is going to be the **last release that supports Python 2**. Support of Python 3.4 and MediaWiki older than 1.19 is also going to be dropped. After this release, Pywikibot is not going to receive any further patches and bug fixes related to those Python and MediaWiki versions. Functions and other stuff specific to Python 3.4, Python 2.x or MediaWiki older than 1.19 will be removed.
For your convenience, this release is marked with a "python2" git tag and it is also the last 3.0.x release. In case you really need it, the Pywikibot team created /shared/pywikibot/core_python2 repository in Toolforge and a python2-pywikibot package in software repositories of some operating systems.