Triairy responded on the Connect!On! August Edition thread on the JP side.

Quote Originally Posted by Triairy View Post
こんばんは。
Good evening,

Quote Originally Posted by testurock View Post
レベル２０まではクエストなどで上がるようにする、とも以前のインタビューであるのでレベル上げを楽し むというよりかは、世界観・冒険をしていればおのずとレベルが上がっていた、という流れを想定しているのではないでしょうか
In the interview it is said you can gain up to level 20 through contents such as quests so I think it's more of not to enjoy leveling but you gain the level while you are adventuring the world.
はい、現行版のようにMobを狩ってレベルをあげるのではなく、コンテンツをクリアしていくことで自然にレベルが上がっていくように開発作業を進めています。
Yes, unlike current version it's not where you kill mobs to level but the development is being done to a style where you naturally level up by clearing contents.

またレベルが上がる速度については、吉田P曰く「みんなが思ってるほど速いスピードではないよ」とのことです
Also regarding the speed of the leveling up, YoshiP said "It's not as fast as everyone is thinking"
Hope that cleared up some threads talking leveling going to be fast in 2.0... as some stated saying I mistranslated... didn't think people would think leveling would be faster than now... meant as fast as now... but oh well... at least now we got YoshiP confirming it's not that fast so hope it's all good.