Django 1.6 wouldn't be a minor release, 1.x are major versions.
You're more likely to see an alpha release of 1.6 in 8 months, the final released versions of Django have a roughly annual release schedule:
* Django 1.4 came out March 23, 2012
* Django 1.3 came out March 23, 2011
* Django 1.2 came out May 17, 2010
* Django 1.1 came out July 29, 2009
* Django 1.0 released September 3, 2008
Update: Didn't read the part of Jacob Kaplan-Moss' response above where he says 1.6 could be coming in "6-9 months" and as in as little as 3 months. To which I'd say "Wow"