Microsoft published a blog that gives more insight into Windows on ARM today.
http://blogs.msdn.com/b/b8/archive/2012 ... cture.aspx
Unless someone else can port and compile it, I'm going to state that Synfig won't run on Windows on ARM. Don't run out and buy a Windows ARM tablet and expect it to work.
P.S. I had a longer post, but the server ate it.