Guild Wars 2

Just a question. Can we use specialization skills, like a necromancer use greatsword
in current game without HOT patch, meaning learning or having acess to traits and skills in current tyria. It will be great if they open that part of game for free to introduce new system, even if is harder to make it in current maps, than HOT main map.
At least introduce a like a learning mode system of HOT, even you have to complete it in HOT map.

By mats

The elite specialization is just another trait line, skills, and an associated weapon added onto the core specialization’s interface. This means adding it will be the same as adding a core specialization trait or skill, which you can do presently in the game. There should be no more learning involved than what you already have to do to get a core trait, skill, or weapon.

I am pretty sure you need to buy HoT to get the elite specialization’s traits, skills, and weapon. However once you do that you will be able to use them anywhere in the world.

You need to buy HoT to get access to elite specs.
You will have to use Hero Points to unlock traits and skills of elite specs.