Supported by who? Us? Their relevant upstream?
We should clarify and put upstream/vendor supported into the text
If it is indeed that case (it looks to be by the PHP versions), the MySQL versions need updating.
MySQL 5.5 is no longer supported by Oracle. 5.6 is in Extended Support until Feb 2021.
Similarly, for PG, only 9.5+ is supported upstream - https://www.postgresql.org/support/versioning/
And at some point... Maybe we should be bumping the supported versions inside MW too...
I'm sure we have some version related hacks around...
It's also not accessible to communicate information only through color, which is also currently happening here.
I don't know what it originally meant, but the way it is used today on this page, I think the color is just as extra helper to guide eyes toward rows that continue through to the latest MW release.
E.g. any bars that only apply to previous MW releases are marked yellow, and the first ones that are still current are marked in blue.
I've removed the sentence since it does not communicate any new information and doesn't warrant a legend I think.
