Yes, that title is correct, it seems we're going to be seeing an update to the Sisters soon. Thanks to the poster on /tg/ for posting this excerpt from the White Dwarf. As always, enjoy this with salt just in case someone is just trying to yank people's chains.
So yeah, lots of salt and sceptism as always.
That said, I'm VERY excited. I haven't seen news that's made me this happy in a while. I've got my fingers crossed that it's real.