I'm running 6.7, but I don't really see much reason for there to be a concern, PHP/MySQL is really what has caveats at times, hence why v7.6.0 will require PHP5 vs supporting PHP4 (which we should have done years ago). Personally I haven't run newer builds of CentOS, but I don't think you should have many problems with it.

You're not really future proofing much, unless it's running bleeding edge PHP/MySQL which could come up with some hiccups.

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