I'm going to try and finish one Ravening Hordes book every week in the coming months, so you can get playing with your old armies as soon as possible. After all official books have gotten their updates, I will update all my previous books to 9th ed, but they should be very much playable as is already.
This includes rules for both 8th and 9th ed, and as you can see, the difference in the army lists is very small between the two for maximum compatibility.
Hope you enjoy it! Next week: High Elves!