On the Lamb Games now has their Endless Fantasy Tactics rulebook available over in their webshop and also digitally.
From the release:
Endless: Fantasy Tactics’ Printed Rulebooks have just arrived, marking the official release for EFT! The Rulebook and miniatures are available in our webshop.
The Rulebook is also available as a Print on Demand product on WarGameVault, which is a great option for our overseas fans as it will ship from a more local source.