Re: Star Dreadnought 

Attack of the Clones: Incredible Cross Sections is canon, hence its designation should stay. IIRC, anything not marked as "Infinities" is canon, though there are varying levels (beginning with "G-Level" cannon, "G" meaning George Lucas). Personally, I disagree with the view that Executor is a Dreadnought [Battleship]  I believe her to be a battlecruiser like Lexington.