User blog comment:Rappy 4187/Technical Update: December 9, 2014/@comment-4129195-20141209230936/@comment-5028213-20141210121232

Here's the deal: The old feature had some catastrophic bug or somesuch (or they just got tired of screening all those image uploads) and the devs shut it down, without any replacement. That's why it happened so relatively sudden. The development of a replacement naturally didn't start before the anouncement, so it will take time to get it together. *

*my own guesswork