Quote Originally Posted by Starbuck_II View Post
Actually, they briefly mention you can multiclass like 3E, pg 7 of the new Class PDF under Warlocks: "Unless you have spellcasting from another source:", how you are getting another source unless you multiclass?

So it proves we have 3.5 version to me.
Even if multiclassing exists, there's no reason to presume it exists as it did in 3.x. Multiclassing has existed in just about *every* version of D&D, if you accept "Elf" as a multiclass in Basic. "Pick a different class every time you level" only exists in 3.x.