An annoying omission of the built-in Facebook Messaging app is the inability to send image attachments. It seems the latest Beta Official Facebook app for Windows Phone 8 will be addressing much of our woes in this area.
Version 188.8.131.52, released today, adds support for image attachments in messaging, multiple photo upload, save/share photos, and improvements to navigation and also inline tagging.
The app also offers the usual performance improvements.
Find the latest version of the beta app, which of course may be less stable and reliable than the official non-beta version, in the Windows Phone Store here.