How soon until they errata to include the Rule "Aid From Beyond" (All units from the Legion of the Damned detachment arrive from Reserve at the start of the Legion of the Damned player’s Turn 1. These units must enter play via Deep Strike as normal.) to one or more units in a Legion of the Damned primary detachment?

Its the only rule in the rules appendix that doesn't have an entry anywhere else in the book that I saw, and seems like they obviously made an oversight of not including it as a part of the primary detachment description to actually make a LotD only force playable.

Note the Mission 1 Echos of War mission which reads Aid Unlooked For which has same rules description but different name.