Post byline with more info about the blog author?

Hey guys,

I would like to add a post byline to my blog where we also show a short bio about the author.

We have the "Post byline" widget in the layout, but that only shows the username of the author.

Would it be possible to extend this to also show the "About" text of the author, as found under his/her profile?

Cheers + cthanks;