[erichurkman]

Outdated packages matter insofar as that you must maintain a working 2.x install alongside your 3.x if you use tools that need 2.x.

Hopefully these start disappearing, as Ubuntu and Arch have already moved to 3.x.

[leobelle]

This has very little to do with Python developers deciding between version 2.7 and 3.x. If you wrote a library or an app in Python 3.x packagers should require the appropriate version of Python as a dependency. Sam with v2. Developers shouldn't worry about that.