|Darksol the Painbringer|
You did and you didn't.
The Warpriest 2nd round playtest gave Warpriests a BAB with their Weapon Focused Weapons (and Deity Favored Weapons) equal to their Warpriest level (which stacked with BAB gained from other classes), which is where you're getting the +1 from.
When it came to the final publishing, they removed it because the Fervor power to Swift Self-cast in addition to Full BAB was apparently too much, since it became way too much Cleric (which is good) and not enough Fighter (which is bad); so in order to balance it out with their outdated Fighter class, since apparently it was too much (it is, but the fault wasn't with the Warpriest IMO), they took it out.
They still kept the increased damage dice and empowering abilities though...