This was pointed out to me by a friend. Marked as sold out and unavailable.

Don't recall a hard copy, non-limited edition codex 'selling out'.

Dare we read something into this?

Will Chaos get to compete with pointy ear D-spammers and resurrecting toast racks?

Free rhinos in a formation?

Take 3 Heldrakes and get a S10 apocalypse teardrop?