Kiara in normal situations you would be right, but the 2 new dungeons won't have anything new: the r25 one have the same model of those in Gridania, and in Cohertas there's a hidden dungeon that looks exactly like the r50 one (you can see it on youtube). New mobs? LOOOOL I bet there are gonna be just different colors of the ones we have right now (even if the only colors they didn't use yet are fluo >.>). No need to talk about the equips, since you can already see ingame tons of different types of armors on NPC, and there were even more shown in videos before the release, so they already have enough material to use. Also I'd like to point out that yoshida posted a long time ago (can't remember, maybe Genuary or February) two artworks of a Dark Knight and a Black Mage outfit... now as a designer myself i can tell you they have serious organization issues if they're drawing in Genuary equips suited for jobs that won't be released until September...

I'm sorry but it's July, we are waiting for a new battle system since Genuary and on the next patch (wich was scheduled for almost one month ago) they're just getting rid of the Stamina Gauge and throw in an AA and this was the aspect that they say have the top priority, I can't think about the state of all the other things they need to fix.
They have no excuses at this point.