I hope they don't switch to 1Password, I switched away from it, after their new Electron app repeatedly failed to autofill passwords in Safari - a basic function.
While not quite switching to 1Password, the latest Win 11 build includes:
> We have partnered with 1Password to bring users a seamless plugin passkey provider integration in Windows 11.
after other details at least it does go to:
> If you are a credential manager developer, we invite you to integrate with Windows 11 to support customers in their passkey journey. To find out more about implementation detail, go to https://aka.ms/3P-Plugin-API.