There is a new version of ArcGis Explorer (410).
I only made one test for simple old version of one of my tasks, it still works.It looks lie they almost didn't changed the templates of creating new tasks.
API Changes (didn't test it yet, only read about it):
I will keep checking and update you ASAP.
The opinions expressed herein are my own personal opinions and do not represent
my employer's view in any way.