The 3.0 patch notes say that Soldiery tomes are disappearing (for everyone, even those without access to the new Law tomes). But they don't mention how the formerly Soldiery gear will be obtained next.

The i70 Philosophy gear became drops from Brayflox Longstop (Hard). The i90 Mythology gear became tradeable for tokens dropped from the Sunken Temple of Qarn (Hard), Snowcloak, or Sastasha (Hard). Where will the i100 Soldiery gear come from once Soldery no longer exists?