I have been wondering this, as well!

It seems we'll still have dual spec. It's still convenient, just as when you have to switch gear sets.

Ive noticed on the screen shots of the new talents theres a Specialization tab at the bottom. So my guess is no, we'll still have dual Spec.

I doubt it -we may not have as much involvement in 'building' them, but the different specialisations are still designed to do the same thing. A player will still need a second spec in order to fulfil a second role on the same character.

I read that Druids will now have 4 specs. Tank and Feral are getting their own specs along with Boomkin and Resto. That leads me to believe that Duel Specs will still be in place even though the talent trees are the same for all 4 specs.

Probably not.

The talents are not specs and those will matter still

You still choose a specialisation (EG, Frost or Arcane or Fire, or Holy, Retribution or Protection).
You still get spec-specific abilities (Deep Freeze, Water Elemental, Arcane Power) as you level up as if you still had talents, only you don't have to spend points in them and they just pop up in your spell books.

Removing Dual Spec would be silly because it is the individual talents, not the specialisation, that you will be able to change on the fly. You will still have to swap between protection and holy to tank or heal and that will still require a dual spec.

I don't think so. But you have to keep in mind talents and specs are now completely unrelated, so the talent changes shouldn't impact the spec changes and vice versa. You'll see combat rogues with shadowstep and spriests with desperate prayer. Your spec will give you all your basic dps/tank/healing abilities. Your talents will be utility, mobility, and survival abilities unrelated to your spec choice.

From what I understand, talents =/= specs in MoP. You choose your spec and get exclusive abilities based on it as you level. For instance, Arms warriors will still be the only ones with Mortal Strike, Prot warriors will have Shield Slam, etc. You will still need dual spec to switch between your roles, they just won't be tied to the talent system anymore.

I was wondering this as well, because the reason for dual specs was to have two commonly used talent trees, and now the trees are really easy to change, and all specs share the same tree.
It just seems silly for me to know how to switch between Discipline and Shadow abilities, but have to go all the way back to the trainer just to learn how to use the holy ones. I'm hoping I can just switch between all three. Even if that means carrying around a new type of dust of disappearance.

Talents are completely different to specs. You choose a spec say Prot or Holy for Paladin, which equates to a role with some characteristics e.g. Tank or Healer. The talents allow you to customise your character to make it more personal to your playstyle, while still theoretically performing the role as well as someone else with the same spec but different talents.
Dual spec allows a character to have 2 roles, which is really useful for levelling a healer or a tank by having a dps levelling spec, or allowing a char to have a PvP spec. Dual specs aren't going anywhere.

It sounds to me like we'll be able to easily change our talents on the fly without having to also change our spec. What this means is that as a paladin, I'll finally be able to have a PvE and PvP Holy "spec" (just changing a few talents), as well as a dual PvE Prot spec (right now my two specs are PvE Holy and PvP Holy). So in a way, I now have at least 3 easily accessible specs without having to spend a lot of gold. So, I'm happy!

Nobody brought up this direct issue, but Blizzard off-handedly referred to dual speccing in reference to MoP a handful of times.

Dual speccing isn't going away.

I think someone on the forums gave a good suggestion to figure it out. We need to stop thinking of them as talents and more like glyphs.

I'd expect it will effectively be the same. Some people have the same specialization for both specs, just slightly different point distribution on talents. Same as now, just looks different. I doubt one would want the exact same talents while tanking vs healing vs dps. Some, maybe you would.

I can't imagine it would be removed. It's not like shadow priests are all that much like healing priests. You still pick a spec at level 10 and many of your former talent tree spells will be baked in as you level.

So if I want to heal, I change my spec to Disc/Holy and go with those spells and talents. Just like now.

You still need to change specialization, that is what will define what role-specific skills you will have.

So my guess is that it will be staying.

Or they could allow us to change to any of the 3 specs on a 10 seconds cast and resources reset. I would like it.

The difference, as I understood it, is the talents are the same for any given class. The specializations are where you are given the specific abilities to perform the spec chosen. Much like arcane mages are given arcane barrage, and resto druids are given swiftmend, there will be more specialization abilities granted.
The idea is that people were skipping abilities in talent trees in favor of cookie cutters. Now you're getting everything you need to do your job, and it's your fault if you screw up, not your spec.

Dual speccing will be for changing from Arms to Prot, Fire to Arcane, Beast Mastery to Survival, Cat to BOOMKIN!, etc. While we will no longer need to do Arms/Arms for PvE/PvP (we can just switch our talents around as we need to) we will still want to do this to change our role/style. Each spec will have several of it's own abilities and mechanics so choosing 2 flavors of DPS or Healing will be very different. I think GCs description of the differences between Warlock Specs (Shadow DoTs are Affliction ONLY, Immolate and several Fire Spells are Destro Only, each spec has it's own sub-resource to play with) makes it clear that we'll have what feels like 33 different classes to choose from.

All I can say is 10 mans are going to be ...... interesting.

As others have mentioned, it's important to realize that specs and talents are COMPLETELY separate now. Well, you might have two talent panes like you have two glyph panes, but respeccing won't reset those.

There are still class specializations, there are simply more "default" spec abilities now. Previously, I got Explosive Shot for choosing Survival. Now I would get Explosive Shot, Black Arrow and a couple other passive or active abilities. THEN I place my talent points.

Think of it as the new spec system gives you exactly what you have today and then add the new talent system on top of THAT.