After the army book update for Vampire Counts, the issued a magazine widening the options for characters that can be taken with a Pact. Does anyone know if they made similar updates for Daemons of Chaos? (I'm guessing Demon Princes are available now).
I haven't heard or read of anything like this being released. However, I heard a rumor (for which I do not have a source/reference at this time, so salt is required) that there is supposed to be a new WFB supplement/expansion along the lines of Storm of Magic planned for later this year. Time will tell.