To ensure that CiviCRM continues to work with standard, contemporary PHP hosting platforms, a future version may make a subtle change in hosting requirements. We expect this to be mostly seamless; however, we're looking for administrators responsible for sites running a recent CiviCRM (e.g. v4.7+) to spend a few minutes to help ensure a smooth transition.
Q: I'm not too fluent in geek-speak. What should I do?
Forward this to whoever manages your server. If you work with a CiviCRM partner, they may be thinking of you already.