Mailchimp interest group integration?

Hello all, I’m looking for exactly the functionality described here: https://www.s2member.com/forums/topic/mail-chimp-interest-group-integration/ (allow users to select MC interest groups on their s2Member registration form and have them applied automatically)

I found this post Does S2 Pro Mailchimp Integration support group or segments? but it is two years old and I hadn’t found any newer information.

Has any development work been done on this since these older posts?