Cor blimey, that one question has been furiously debated back and forth in the last few years. I think whichever definition of "version specific" you subscribe to will depend on how you'd feel about actual examples.
Should an issue be version tagged if it starts in the current release (but will likely continue in future releases)?
Should something be ...
Ok, let me put some points over i's.
Please read the tags excerpts before retagging. I reject incorrectly tagged ones.
[Closed] questions with untagged I tend to prefer just remove them. It clutters the site.
Don't just retag and forget about the title, or the body of the question. Fix as many problems you see with the posts, as is possible.