As MailChimp continues to evolve for the better there’s been a recent update with their API (MailChimp API V3.0 Release)
Version 3.0 of the API has been through months of development and internal testing. We’ve had it in public beta for 2 months. With this launch, the API is stable enough that applications and integrations can start offering v3.0 functionality to their users.
In light of this, make sure you test any signup forms on your website linked to your MailChimp account to ensure it’s working correctly.
If you notice anything not quite right, let us know and we will get a resolve for you ASAP.