Following on from Jeremy's newspost, SleChy from Gamesplanet.be was good enough to inform me of an interview they have conducted with Mark Skaggs. The interview does ask several probing questions about C&C and Red Alert 3, but little is given away.
"I canít really comment on the products EA has in development. I was set up to start the next C&C, but decided that it was time to put my family first and so I took a break. Iíll always love C&C style RTS games and Iím always thinking about the next product I want to make."