The latest news is that the Austin Oaks owner, SPIRE (a.k.a. Twin Lakes, Jon Ruff) have hired a PR outfit to help with the PUD "marketing" effort and bolster the Steve Drenner Group lobbying of city hall effort. You can read all about it here: http://impactnews.com/austin-metro/northwest-austin/developer-revises-austin-oaks-plan/ This news story reads like it was hand prepared for the journalists over at Impact Austin by the developer's PR firm. The diagram is what you may want to pay particular attention to... The building footprints don't even come close to what Twin Lakes submitted to the city's zoning dept. See below the contrast of the building footprints vs the parcels of land.
Once they get their PUD, there is NO REQUIREMENT that they build what they have in these drawings submitted. These are MOCK UPS. The final drawings are a long way away. The platt notes are the key thing to read on the documents submitted. They contain all kinds of caveats to what is being itemized in their fancy charts that they have provided to the neighborhood folks at NWACA. Be sure to read the fine print, as they say. One thing remains true: the devil is in the details.