When he re-introduced her slimmer design, he made both available in the costumes screen as an alternate pose. I don't see why he would remove one of them, unless he plans to add several new outfits and wants to avoid having to draw two versions of every new cell costume.
If you look at her latest artwork (the interrogation scene), both of these cell poses are close enough to work. She is ripped with huge tits in both.
I prefer her bulkier design too. The slimmer one is closer to the show (and looks fantastic too), but I love the exaggerated breasts and musculature on the bulkier one, as well as the assertive posture. This is an amazon I want to break!
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