Yes and not only that but AMC and the same crew are also taking on her other supernatural series, The Mayfair Witch chronicles. In the books, she kept the two worlds separated even though much of them both took place in NOLA. She did finally have them come together but it was at the end of the series (s) and the books are actually quite weak by the time even for someone who considers themselves a fan, as I do. The witch series actually goes into a tailspin by book number two but the first one “The Witching Hour” was her best work IMO and it isn’t even close. There is also a stand alone mummy book.
The Immortal Universe is a showrunner's dream. It's a popular, accessible IP with a deceased creator that has some universally admitted weak spots.
They can take Rice's inspiration and make it better.
Drop some of the weirder junk from later on, draw the whole thing together from the start, etc.