I’ve been trying to help nostr:npub1nevsewvjqhrsmpfcpdqw6v3e9f6z8w9sq0yt8kpndk2cumw8g6hs5mjmve. They have built a GUI program that lets you install an upgraded signet version of Bitcoin Core with BIP300. There are also a few sidechains like Thunder and a privacy focused zcash fork.

Paul Sztorc is currently building CUSF, which stands for Core-Untouched Soft Fork. It will allow miners and users to choose future soft forks in an organized manner.

The cypherpunk vision for Bitcoin is coming soon