WordPress has won the top prize in the 2009 Open Source CMS Awards that are put on every year by Packt Publishing from the UK.
This year, it has been granted the title "Best Overall Open Source CMS"
WordPress now has some additional credibility in the CMS market instead of just being considered a blog platfom.
From the announcement:
We are pleased to announce that WordPress has won the Overall Best Open Source CMS Award in the 2009 Open Source CMS Awards. WordPress has won this Award for the first time in the past four years, earning itself a place in the Hall of Fame category for the Award next year.
More info at packtpub.com/award