Do existing themes have to be modified extensively to be compatible with WordPress 3.0? I only ask because the theme author for the one I'm using (Stealth Gray Mix 2.5.1) with my blog doesn't seem to be providing support for it. I've tweaked the theme anyway and am fairly confident with modifying things as long as there's some guidance.
At the moment I don't want to upgrade to 3.0 in case it breaks with the theme as is, the other alternative is to choose another theme that is compatible with 3.0 but that will bring it's own set of problems as I'm sure I'll have to modify it to get it displaying how I want.
An advice gratefully received. Thanks.