Development release -
1. Better submission management.
2. Support for commerce and file entity.
3. Preview source content before sending it out for translation.
4. Send content from across content types in a single submission.
5. Ability to do in-context review of content.
6. Better load management.
7. Bug fixes
This release is off our normal every second Wednesday schedule, due to being busy at Drupalcon, we will still have a normally scheduled release in May.