we are in the process of preparing a brand-new 3.1 release very soon. For that purpose I prepared a list of proposed (and mostly implemented) features at https://github.com/echo3/echo3/wiki/Release-Planing. Please have a look at the list and let me know if you are missing some import feature (which you think should go into this release). Your feedback is very welcome!
The idea is to have a release with not-too-many features, but which is feature complete, and stable/robust/clean as Echo has ever been (a real distinguishing feature of Echo btw...).
Some minor works are still needed (such as implementing rounded corners/box shadow on other applicable components), and we should also set up a kind of a test plan to manually test the features on different platforms and browsers.