The website gamebastion.com is an aggregator of news from open sources. The source is indicated at the beginning and at the end of the announcement. You can send a complaint on the news if you find it unreliable.
As far as fantasy monsters go, dragons are among the most, if not the most, iconic. They show up in some games as boss monsters or the major antagonists of campaigns, but not as often as one might think given their inclusion in the game's title. Many official modules from Wizards of the Coast do not include dragons, or if they do, feature them briefly in side quests or one-off interactions.