I’m not sure, haven’t been paying much attention recently, but we’re any of them that you’re waiting for Legends’ed? If so, they’re likely coming out with the titan and other specialty rules right before the official ‘release’ of the edition.
Maybe some private tracker specifically for music? Seems like a niche enough ask that it would be something someone specializes in.
I use lord latifi streams, they’ve been good so far since F1livegp went down.
I believe the leaked schedule said the forgeworld indexes are out after the last of the imperium/Xenos/chaos indexes. Not 100% sure though
1337x is another popular, widely used public tracker. You should check the mega thread if your looking for other options.