If you stop by your local shop, thumb through the Military Miniatures in Review magazine. The latest issue (32?), has the new DML Nashorn on the cover and the build article tells the differences between the the old and new. I do not know anything about the Nashorn so I couldn't tell you if the differences they list are true or not though.
I believe the cover is titled "Naturally Nashorn" and the magazine runs about $8.