Thomas Thurman has posted an entry on his blog relating to this bug: http://blogs.gnome.org/metacity/2010/03/21/theme-based-button-layouts/
I should note that introducing a new theme version is seen as quite a big deal, and the changes proposed for a version 3 format have been quite large (like switching to SVG): http://blogs.gnome.org/metacity/2009/02/04/version-3-themes/
Thomas Thurman has posted an entry on his blog relating to this bug: http:// blogs.gnome. org/metacity/ 2010/03/ 21/theme- based-button- layouts/
I should note that introducing a new theme version is seen as quite a big deal, and the changes proposed for a version 3 format have been quite large (like switching to SVG): http:// blogs.gnome. org/metacity/ 2009/02/ 04/version- 3-themes/