You might be looking at that headline and wonder to yourself "what is Skyforge?". Skyforge is an upcoming free-to-play MMORPG from Allods Team and Obsidian Entertainment that's been in development since around 2010 with no release date announced as of yet. Nonetheless, the team has recently released a post over on the forums that goes into detail about the game's class system...and when I say in detail, I mean several paragraphs of detail.
For starters, unlike a lot of typical RPGs where you choose your class and level them up throughout the game, Skyforge will let you choose a class at the start of each battle, giving you full access to each class to better suit your needs...or maybe you just like a particular class. There will be three groups of classes: Beginner, Intermediate, and Advanced. The beginner group will have three classes to use: Lightbinder, Cryomancer, and Paladin. Once you get enough experience in the game you'll unlock the Intermediate group with five more classes, and then eventually the Advanced group with another five classes. You can change between any class you have unlocked at any time that you or your group is not in combat.
For a bit more of a detailed explanation about the class system, check out the forum post over at the Skyforge website.