Twitter will soon remove support for third-party image hosts, such as Twitpic and yfrog, from its official apps, according to a person who was briefed on the company’s plans. The changes will be coming fairly soon — likely in the next updates to each client.
This makes more senses than killing third-party clients. Because this is a part of the content being uploaded to Twitter — so they likely want to “own” that data. What will be interesting is to see if Twitter changes (or already has) terms in the Terms of Service (for Twitter) that by default grants Twitter the rights to use the images you upload via their service. I know this has long been something Facebook tries to get away with, so we will see just how evil Twitter wants to go on this one.