bare vs non-bare <1.7 then >=1.7 ?

Hi all,

We're on the way to have our first project using Git.
We're currently mostly using Hg (90%) & SVN (10%).

When experimenting in order to train some colleagues, I saw that If I 
clone a repository, I couldn't push to it because it was a non-bare one.
Searchin for some explanations, I found this ressource:
http://www.bitflop.com/document/111

It's told to be reliable information for Git < v1.7.

What would be different for Git > 1.7 so that I could be up to date with 
the facts?

Thank you.

-- 
RMA.