Now, to be fair, I'm nowhere near this cynical.
Looking at the 5e playtest rules as they stand, it would be ludicrously easy for them to publish a "This is a 4e Hack" for Next. I mean, we've already got the majority of people to accept Fighter Superiority Dice (or whatever they're called) which are a purely meta-game mechanic. I mean, sheesh, I can spend dice AFTER AN ATTACK to lessen damage. That's about as meta-game and disconnected as it gets.
So, layering on an AEDU structure isn't that much of a challenge. With the very flat math, we don't have to worry overmuch about the damage end of the powers - which isn't really the interesting bit anyway. The status effects and focus on tactical play wouldn't be that hard to add. An Encounters style structure is pretty much what we've already got.
I'm more worried about the other two pillars, but, I think the next rules update will see a lot of material there. At least, according to Mearls.