The news is indeed in! Exchange Server 2007 has just Released to Manufacturing (RTM)!!! Just so you know I'm not making this up because I've been hopeful, here's the announcement on the Exchange Team Blog: http://msexchangeteam.com/archive/2006/12/07/431782.aspx.
I am so excited about this news. To get more information on Exchange Server 2007, please go here: http://www.microsoft.com/exchange/evaluation/default.mspx. There are a lot of great articles to help you with planning and deployment of Exchange Server 2007.