The launch page needs a few updates and corrections:
"PHP 7 works twice as fast as previous PHP versions. We have modified phpBB to now completely support the latest releases of PHP (7.1.3 to 7.4) so you can enjoy all these performance advantages."
"With our brand new installer, updating will be easier than ever in phpBB 3.3! Upload a single folder to your board and all your files will automatically be replaced."
"reCAPTCHA 2.0" changed to "reCAPTCHA 3.0" for the upcoming phpBB 3.3.1 release:
"Using CSS-driven icons from FontAwesome, we now have more intuitive icons with retina quality all across phpBB, as well as considerably improved the speed of page loads."
Off topic, but newer versions of Symphony are out now: