It is all part of the same series 'The Second Apocalypse'.
First three books are a series: 'The Prince of Nothing'
The Darkness That Comes Before
The Warrior-Prophet
The Thousandfold Thought
The next four books are a series, 'The Aspect Emperor' detailing what happens after the first trilogy.
The Judging Eye
The White-luck Warrior
The Great Ordeal
The Unholy Consult
The first three books are amazing, I cannot give them enough praise. The quality begins to drift after that. There is a time skip, numerous new characters are introduced - many of them pointless - and so many new threads are woven into the tapestry that it is barely recognizable up close. The last book is terrible. It was painful to work through - and not just because it is nearly half torture porn inflicted on the characters, but because it ends on a massive cliffhanger. There is NO closure to the story and the book is actually around 150 Pages SHORTER than it would seem, as the last 1/4th of it is all glossary and related tat.
There will 'likely' be a third series, to finish it all, but it is a long way out.