Release notes say of 6.x-1.x-dev (2010-Jul-11) "Semi-stable development branch for 6.x-compatible version". I have inherited a site that is running the Nov. 2008 6.x-1.x-dev on production site. Wondering if I should update. Which is more stable for production site? The November 2009 or July 2010 version.

(I know that might seem obvious, but if the July 2010 has experimental stuff in it, it might not be as stable.)