I have updated my testnet to hived rev f74d4f3. In addition, I also created a docker image, thanks to 
This testnet blocklog has been reset, so if you have previously sync'd to my testnet, you will need to clean out your copy and start a fresh sync, like the very first time.
I was hoping not to have to completely restart the blocklog and just pick up where I left off, with only the hived binary being updated. But something went wrong and I'm not sure what. However, it's common to restart a testnet like this anyway. Normally, Hive testnets have a hard limit of 90 days.
Maybe next time, I'll try out the new state-files load/restore options.
testnet: true
majority version: 1.25.0
p2p: 134.209.41.170:2001
rpc: http://134.209.41.170:8091
chain-id: 18dcf0a285365fc58b71f18b3d3fec954aa0c141c44e4e5cb4cf777b9eab274e