From the announcement:
We are pleased to announce that ImpressCMS has won the Most Promising Open Source CMS Category in the 2009 Open Source CMS Award.
While ImpressCMS took first place in this category, Pixie and Pligg weren’t far behind and settled for a tie in the first runner up spot.
ImpressCMS has featured in the top three in this category for the second time in a row, and has lived up to its reputation this year by winning the top spot.
Pixie and Pligg, on the other hand, featured in this category for the first time and managed to impress a lot of judges with their quality and support.