As you may know, Canonical has released the Ubuntu Touch OTA-4 Update a while ago, and now is working at implementing new features for the OTA-5 Update, which should get released in mid-July, if it does not get delayed for some reasons.
With two weeks left until the next Ubuntu Touch Update, we know for sure that the development for the LibreOffice viewer app for Ubuntu Touch has started, both the Sudoku and Terminal apps received updates, support for Media-Hub background playlist got implemented in the Music app, the Calendar app UI has been improved, a new thumbnailer for GStreamer to create screenshots of video streams has been implemented, support for WPA-Enterprise in the network indicator and system settings has been added.
Also, the Help and Calculator apps are still under development.
As a reminder, Ubuntu Touch is used by default on Bq Aquaris E4.5 Ubuntu Edition, Bq Aquaris E5 HD Ubuntu Edition and Meizu MX4 Ubuntu, a phone that is available only in China, for now. Also, Canonical provides official support for the Nexus 4 smartphone, developed by Google and LG.