One of the areas I'm most interested in learning about are the classes and what kind of roles they'll fill. Some sounds pretty self explanatory, but others are rather nebulous. So I thought I'd make some speculation on each and see what other thoughts people have.
Raider - Going to be your standard bruiser-type melee class. Possibly similar to the Enforcer from M:Y0 and has an intimidation factor.
Rogue - I can't imagine this being too different from your typical D&D rogue. Sneaky, steal-y, assassin-y person. May do well with melee or ranged.
Ranger - I suspect this will be similar to the Stalker in M:Y0, the class that can provide bonuses and help when exploring the map. Not sure if it'll have the "natural" flair that the D&D class tends to have, or will be more like a LOTR ranger.
Spellbinder - No idea what style of magic is going to be present here, but I get the impression that the setting is going to be relatively low-magic, so Spellbinders are going to be rare, feared, or shunned. The name suggests that magic is inherently wild and needs to be bound and controlled before it can be used. I'm hoping for a very unique magic system that plays off this. Something high risk, high reward. Possibly Elf only, or not taken by dwarves?
Scoundrel - If this isn't the Forbidden Lands' equivalent of M:Y0's Fixer archetype, I have no idea what'll set it apart from the rogue. And if it's going to be the negotiating "face" of the party, then I'm not sure how that'll interact with the Minstrel.
Minstrel - Sounds like a Bard, but it might work like the Chronicler from M:Y0, boosting other people's rolls with inspiration.
Druid - Hard to imagine a Druid as anything but a caster with power over nature. We currently don't have an obvious divine caster, so maybe druids will fill this role. If so, perhaps it'd make more sense to call them Shamans? I typically don't like divine casters and holy warriors (paladins), but shamanistic casters have always been cool in my mind. Maybe Wargfolk only?
On a related note, I am very against the idea of kin-restricted classes. I will instantly ignore any rule that says something like "only Elves can use magic because something something". Or how in Dragon Age: Origins, dwarves couldn't be mages because they were too resistant to magic. It makes sense in the lore, and it's a neat flavor to the race, but I don't think it's fun gameplay to restrict players like that.