I ordered the Khomo case from Amazon. It's the closest thing to the old Apple Silicone Covers that I've found so far.
https://www.amazon.com/iPad-12-9-Inch-Charcoal-Color/dp/B071WQKKFT/ref=sr_1_5?ie=UTF8&qid=1500840667&sr=8-5&keywords=Ipad+12.9+



https://www.amazon.com/iPad-12-9-Inch-Charcoal-Color/dp/B071WQKKFT/ref=sr_1_5?ie=UTF8&qid=1500840667&sr=8-5&keywords=Ipad+12.9+
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