Here are some pics of the new case for iPad Pro 12.9” 3rd Generation. The 11” is practically the same, just smaller.
The pics are of a pre-production sample, the thermoplastic elastomer base will have a silky matte surface texture. Not sure pictures would show the difference, though, but the tactile feel is richer.
Update on the 10.5” iPad Pro case: the current stock is selling out fast. The next batch is coming together with 12.9 and 11”, middle of May.