As you can see from the screenshot above, I just produced my first block as a HF25 ready witness. I had a little bit of a hickup with syncing my blocklog, basically taking one day longer than I expected, but I'm there now. My witness node has been updated and it is now running a HF25 compatible hived server.
I'm on the 69 position (66th in absolute terms) so any witness votes are welcome.
Onwards and upwards!