Based on the source from Ubisoft forum, there will be a SE/CE to be released in North America.
I was skeptical at first knowing it might be the Ubiworkshop encyclopedia bundle, but the source was released 6 days after the bundle came out.
"we know that the setting of AC3 pretty much requires that we deliver a staggeringly amazing Special Edition for North America, so we have been working very hard on meeting that expectation..."
http://forums.ubi.com/showthread.php...-update-Forums