This is definitely an article that will appeal to many. On November 27, 2017, on the Advanced Tau Tactica forum, user Haechi posted the information he had about the releases in early 2018, but for a while it was not possible to verify if it was a reliable source.
According to Haechi's information, at the beginning of January we would have seen the Chaos Demons for Warhammer 40,000 and Age of Sigmar, while at the end of the same month we would have seen the Custodes. This is exactly what we have seen and we will see during this month. This information arrived well in advance and was even accurate in placing Demons and Custodes in both parts of January. It therefore makes sense to illustrate what other outputs are planned by Haechi, along with some new information posted after receiving confirmation on Demons and Custodes.
First half of February : Adeptus Custodes. Second half of February : Thousand Sons. First half of March : T'au Empire. Second half of March : Necron. Between April and May : Drukhari, Arlecchini and two new elven armies for Age of Sigmar. This could also confirm what I theorized in the recent vocal message on the Astropath Telegram Channel , namely that the Battletome: Legions of Nagash will not be accompanied by new models, but will serve to put Death in step with the rules of the other Great Covenants while the new models will come later. Presumably end of May or June.All of this still falls into the rumors, but the source proved to be extremely accurate with regards to January's releases, so we could trust it.