This is ahead of the PCI changes that will affect the June 30th 2016 deprecation the TLSv1.0 protocol. (PDF)
What does this mean for you the user?
Based on analysis of our IDS logs, this will affect around 6.32% of requests. As of May 31st, such requests will present an error when trying to negotiate a TLS connection.
Users are advised to update their clients accordingly. SSLabs provides a good test for browsers, though this does not support command line tools. Going forward, we will only support TLSv1.1 and TLSv1.2.
These changes come a little over a year from our previous SSL overhaul, and are part of our ongoing effort to ensure the security of our users.
Thank you for your time. Please leave any questions in the comments section, or email us at security(at)percona.com.