How can we tell when there is running code available in Chrome Canary

[sbweeden]

I've read the estimated timeline, and looked at the flags available in Chrome Canary 125 on Mac. These don't line up - the estimated timeline suggests a flag called #enable-standard-device-bound-session-credentials whereas in Chrome Canary I have two different flags that seem related, neither of them with this name:

• #enable-bound-session-credentials-software-keys-for-manual-testing
• #enable-bound-session-credentials

Further, I enabled both these, then setup a URL on a web server that returned the HTTP header:

Sec-Session-Registration: "/securesession";es256;challenge=EjRWeJCrze8

Upon accessing this URL I can see the response header in the Network debugger on the browser, but the browser never makes a request to /securesession/startsession

So ... can the milestones document please be updated, and can someone help with providing a pointer to where I can tell what actually is supposed to work at this point?