My long-term hope is that we’re going to bring the current Raid back as a “retro” stand-alone activity at some point. It’s actually not too bad in terms of what we’d have to re-work to make that happen compared to say the overworld zones. I would say there is a good chance of that happening at some point, and then the pets would be available to get via that.
But other than that, no plans to make those pets (or capes) available anywhere else. Note that there is not a new pet for the Expert Mode Raid, just a new cape.
All of the classes are going to receive a re-work in the sense that they’ll be going from 20-30. That means at least some new talent tiers. I honestly don’t know the degree to which each individual class will be re-worked beyond that. My primary focus right now has been prototyping the new classes to see where they fit into things.
I can say that none of the classes are going to suddenly massively change (like e.g. we’re not going to suddenly make Ranger aiming totally different or something like that). The tweaks would be more like a new/replaced talent, different balancing, maybe re-working how the Ranger trap works or improving the Runemage casting a little, that kind of stuff.