Materia + catalysts! Keep them Disciple of the Land only!

[Sonic_the_Hedgehog]

but I belive there will not be any overprice of catalysts if all can do gathering or we are now stuck with the class we choise ?

You will still be able to pick other classes.

[Shneibel]

You will still be able to pick other classes.

so what is the different with the new armory system ?

[Sonic_the_Hedgehog]

so what is the different with the new armory system ?

Armoury System

• Classes

  Actions will undergo major revisions, along with both the underlying mechanics and conditions.
  
  By major revisions, not only do we mean the tweaking of effects and potency of existing actions - we will work from the ground up to redesign and reassign actions based on clearly identified class roles.
  
  We will also make a number of changes as part of our reexamination of how actions are equipped and the character requirements for doing so. First, actions learned by each class will be set to the action bar by default when playing as that class. Also, we will be making some actions settable on any class, while other "class-defining" actions obtained at higher ranks will be usable only by that class.

• Jobs

  The job system - that series-defining trademark - will be implemented in FINAL FANTASY XIV (details such as specific jobs TBA). Quests to unlock each job will become available once you have reached a certain rank in the corresponding class.
  Rather than being advanced versions of classes, we would like players to think of jobs as specialized playing styles optimized for partying. While playing as a particular job will render you unable to equip certain actions of other classes, you will be compensated with access to exclusive actions, which can be acquired through quests.
  
  In practice, players will find the existing classes effective when playing solo or in certain party setups. Jobs, however, will shine in party situations where specific skill sets are demanded. Now, you didn’t hear this from me, but there are also rumors circulating that quests for obtaining job-exclusive equipment are also in the pipes.
  We at the development team are currently hard at work on the job system, and expect to have details to share with you soon.

So basically much won't change with Armoury System, other than changing a few skills.