As someone who actively edits several fandoms relating to older games I still play, fandom wikis don't hold much weight for fact checking since they require both time/effort to update pages as the information becomes available, and for said information to be known in the first place.

Conversely, intentionally omitting things from update notes/wikis until damage control becomes impossible isn't a novel tactic in the gaming industry. Blizzard would repeatedly "forget" to include certain things in patch notes until they landed because it was clear there would be blowback to the changes.

Similarly "beta feedback" is often enough ignored even when the changes are included with any criticisms being raised countered with "The Devs will listen to the players [this time], the patch changes are subject to changes [this time], they wouldn't make let players test things if they weren't going to then fix any mistakes that crop up [along with all the existing mistakes that are still present, repeatedly documented, and clearly ignored so the new shiny can get pushed on the brainless casuals]".

There's also nothing to stop a company subverting their own fandom wikis to do all this, so keep a very open mind on such things that can be used as just another tool for deceiving the playerbase until enough time has passed it no longer matters how much of a lie was told.