Thank you all for the reply and information! I made a mistake when posting my question as I was actually referring to this end times collection. After further research I found out there was another end times collection which has the same name and same 5 books and was available about a week or 2 ago on black library’s website. I will edit the main topic again to reflect the correct book but once the campaign books goes back on sale I think I will be giving it a miss as it seems based on what I read here it is more akin to one of the AoS broken realms book with what it seems to be less lore and more rules for unit unlike broken realms where lore and rule update are equal about 50:50.

https://www.amazon.com/End-Times-Collection-Josh-Reynolds-ebook/dp/B01MQJHI1I