The "Five for the Future" page is still up. Wayback machine shows that the contributor/hours numbers seem to have been revised downwards last week, possibly suggesting that WP Engine contributes less than it used to (or that Matt noticed and decided to give it a more conservative estimate), but also meaning the figures there now should be up-to-date and that WP Engine does still currently sponsor at least 11 contributors.
WP Engine was listed as sponsor for WordCamp Europe 2024[0], which was in June, and ran DE{CODE} back in March. So they seem at least relatively recent on events.
[0]: https://europe.wordcamp.org/2024/sponsor/wp-engine/