Crafters (Tailors, Blacksmiths, Leatherworkers and Engineers) will be the only ones able to need on these in the future.
•Chaos Orbs can now only been seen and rolled on by characters with a minimum skill level of 425 in Tailoring, Blacksmithing, Leatherworking, or Engineering.
with a further blue:-
Non-Crafters can no longer roll on Chaos Orbs
Originally Posted by Zarhym (Source)
This is a bug. A hotfix was applied about an hour ago that changes it so Chaos Orbs will only be available for Need rolls by characters with Tailoring, Blacksmithing, Leatherworking, and Engineering (minimum skill of 425 required). This fix may not appear until the next time realms are restarted, which is likely to be early tomorrow morning.
I'm a bit of a sad panda with this change as it makes farming mats a bit of a cumbersome exercise for my crafter alts.