Twitter for Android received a major update today bringing yet another user interface update and a handful of feature additions.
Namely, users can now share images over Direct Messages, which is now featured prominently on the bottom tab bar. Previously, users had to rely on third party services for sharing links to images in DMs, but now with native image support images appear inline.
Photo sharing over Direct Message appears to only be supported in the official Twitter apps (iPhone, iPad, Android) and lacks an API, so photos shared over DM currently cannot be composed by third party Twitter clients. The update contains a handful of other features as well (full changelog below):