In January, in thread "Coraline - Begging For A Change", lance said
"The author display isn't an option... yet. I say 'yet' because we're working on including it soon based on whether a site has more than one published authors. Those that don't, won't see it; those that do, will see the author and link to view all the author's posts. ... I cannot promise it will be this week or next, but likely in the near future. "
I too am missing this in Coraline. It seems pointless to use a theme for a blog with multiple published authors which doesn't include an author byline in all posts and the main blog itself. The thread "Coraline - Begging For A Change" is marked "resolved" but this issue hasn't been resolved at all. I hope lance's comments mean that this is being considered for all themes, not just Coraline. It is certainly a basic feature for multi-author blogs.
A far as I have been able to tell, even buying the CSS upgrade won't help me because the suggested code only includes the author's byline on single posts, not the main, multiple post blog itself.
I have started looking at other themes to see if I can find a different one that will work for me but this "feature" isn't included in the filters. I have found one list that seems to help a little.
The big problem is that almost everything else about the Coraline theme fits the way I want to do things, multi-author, flexible width, custom menu, custom pages, Coraline gallery, clean, uncluttered look (once I delete the header graphic) and web pages.
Why is the ability to include/exclude an author's byline not a part of every theme that supports multiple authors? At the very least include this in the theme description and the filters. Please!!!