New PayPal TLS requirement by June 30, 2018

PayPal is requiring merchants to upgrade their TLS before June 30, 2018. I’m wondering if s2Member needs to do anything, or if I need to do anything to comply, other than have an SSL certificate.

Here’s the PayPal info: https://www.paypal.com/stories/us/avoid-disruption-by-ensuring-your-security-system-is-up-to-date

UPDATE
I see an old answer to this question here, saying we don’t need to do anything: PayPal Security Upgrades 2017

Anything new to add?

There is also a new requirement by MailChimp to make all API calls via HTTPS by July 30, 2018. Does s2Member currently do this, or will it have an update in time if not?

You must test if your hosting can do SSL connections to Paypal servers, or ask admins to do that. There at https://github.com/paypal/TLS-update/blob/master/php/TlsCheck.php stay a testing script. If not works, you (or admins) must fix it.