Didn't they already state that ME3 was the end of Shepard's story arc? So it's either going to be DLC for ME3, or a brand new character to be used in ME4. We'll see what happens. Anyway you look at it Bioware essentially gave a giant middle finger to all the fans who have played from the very start.* There is a save file entry for "Lives to fight again" if you choose Destroy with 4000+ effective war assets. Use GIBB save file editor to view this. It's probably the most significant piece of inarguable evidence that further post "end" content is likely in DLC or sequel form. see: svn(dot)gib(dot)me, as much as I'll provide as posting a link to it is probably a forum policy violation.
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