Has anyone been accepted into the Anno 117 Beta?

We have not yet sent out any invites for the beta (if you're referring to the recent sign-up). This will still take a while - we'll definitely post news as soon as we start sending out invites.
You can continue to sign up here if you haven't done so already: https://register.ubisoft.com/anno-117/

We did already do smaller playtests over the last 1,5 years or so, but those do not have a public sign-up. They are a mix of hand-picked people and people who generally have signed up with the User Research Labs (e.g. when we looked for people who had zero experience with Anno), the latter usually being in-person playtests (link to User Research Labs: https://playtest.ubisoft.com/ - this is not restricted to Anno specifically).