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.
Which is great, but what Custodes really need is a unifying across 30 and 40k. Why does the Legio not get Allarus or Vertus Praetors, and why does 40k not get Meridian Guard or Agamatus? This is my personal nit to pick but to answer the thread question, they've stated that the IA Index would come out shortly after launch. It is my belief that that will be sometime in the last week of June.