Does Starcraft 2 Contain a Diablo 3 Easter Egg?

I was playing the Starcraft 2 single player campaign and was exploring "The Devil's Playground" mission.  In the bottom-right hand corner of the map, I saw what looks like a Diablo III easter egg.  You can decide for yourself.

Potential Diablo III Easter Egg?
(click to enlarge)

I'm thinking so...

It's cool that Blizzard does fun things with their games that reward players for expanding their horizons and checking out all the details of their maps.  Can't wait to see what other fun things we'll encounter.  I've probably already missed some, so now I'll have to go back and play the prior missions again.  :)

Now, I spent some time trying to figure out how to get some Reavers over to the sucker and try to take it on; but alas, there was a big rock in the way on the one path they might have been able to rocket jump over to him.  I also tried landing a Command Center on it, but of course it wouldn't land.

If you've had better luck getting some Terran units over there, please let us know!