Allakhazam poster GryphonStalker has pointed out in our Druid forum that Titanguard, the weapon enchant that originally added 75 stamina to a melee weapon and was then reduced to 50 on the PTR, has been scrapped altogether. Blizzard's Greg "Ghostcrawler" Street explained the dev team's reasoning :

Had this enchant gone live it would have become THE enchant for nearly all tanks. It would not have been an interesting choice. We would have had to keep introducing higher tiers of the same enchant, or else players would just keep using this version for perpetuity. We put Stamina already on many items. We don't think your weapon needs one as well. I received messages from several tanks for very prominent guilds asking us to please not go forward with this enchant. They understood why it was bad for the game.

Death knights have access to superior enchants in part because they do not have a shield or ranged weapon slot and the stats provided by those items.