The current state of Ubuntu 13.04 can be found at status.ubuntu.com. As of publishing, the overall completion status is 13% of 1704 items. Of the essential work, there's only 8% completed tasks, 16% for high, 13% medium, and 12% for low. With 1704 work items from 183 blueprints and there being 113 days left until the planned Ubuntu 13.04 release, about 13 work items need to be completed per day.
More details on the Ubuntu 13.04 reported work items can be found from the status page. Among the Ubuntu 13.04 features that will hopefully happen include using XZ packages, new methods of developer engagement, Ubuntu TV enhancements, Hybrid Graphics (Optimus) improvements, the Linux 3.8 kernel, Unity widgets, Unity performance improvements, and much more.
Ubuntu 13.04 is expected for release on the 25th of April while the beta release is expected for March. The Debian Import Freeze is happening in mid-February.