Developer, Former MVP, now at Microsoft - Best of 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
"... The WCF programming model support will be limited to channel layer messaging (no service model support on the device) [...][...] We'll expose all necessary extensibility points so people could plug in their own transport and layered channels, while maintaining a unified programming model. [...] The channels we plan to deliver out of the box are Http and... yes, e-mail (for WCF on desktop and device)."