One of the reasons we don't always announce changes before they happen is that things can move pretty fast in beta. Even though I mentioned some Protection changes above, they are already out of date.
Overall, the goal is to mix up Protection's rotation a little more. Prot warriors are used to lots of buttons, and we don't want too much waiting around. (For Arms and Fury, we can just flood them with rage, but with Protection the risk is that we hit 100% uptime of Shield Block, which turns it from being a short cooldown to a managed buff like Thunder Clap.) We also want to make sure tanks who execute their attacks with more skill are rewarded with better mitigation. To make this compelling, we think it needs to tie into Rage generation.
As part of this, we're going to try Defensive Stance no longer generating Rage from auto attacks at all. Instead we'll have nearly all Rage come from special attacks while in Defensive.
In addition to Shield Slam, we'll try Revenge and Devastate generating some Rage. Devastate will do so by once again being the ability that procs Sword and Board. For Revenge, we agree that the more rotational version has lost some of its old excitement. Revenge will generate Rage outright. It will no longer proc from blocks but will also have no cooldown so you will sometimes get multiple Revenges in a row.
We're going to try Shield Block using the charge system that we've tried for a few abilities, such as the monk Roll. This one may feel too different, but we'll see. What it means is you can use Shield Block twice in a row, but then pay a 15 sec cooldown. (The first use will start its cooldown as soon as its used.) This mechanic should let you chain together two Shield Blocks but not keep it up 100% of the time.
We think this rotation feels better and more traditionally Prot, but let us know how it feels to you.