It will still be really easy to have Python 2 & 3 installed side by side, and "python" will still be Python 2. So you don't need to do any symlinking or messing

It will still be really easy to have Python 2 & 3 installed side by side, and "python" will still be Python 2. So you don't need to do any symlinking or messing with $PATH. I think Ars misunderstood, as well: 12.10 has both Python 2 and 3 by default. They're working towards dropping Python 2 from the default install, but it's not there yet. When they do, it will just be an "apt-get install python" away.