Do you mind sharing the URL exactly where you read it?
OP is referring to factoids that are displayed under the first post of every page.
You can see the full list of factoids here:
https://bitcointalk.org/adrotate.php?adinfoAccording to achow101 (who is one of bitcoin core developers), it's no longer a beta software, however it's still an experimental software.
Bitcoin Core still (intentionally) contains a line that says "this software is experimental". The line saying that Bitcoin Core is beta software was removed in 2014.