Did Google give a rejection explanation?

For a while there was a page about jMonkey trying to get in on Google Summer of Code. I just looked up the Google Summer of Code 2011 list of mentoring organizations to see if jMonkey made it, and I was slightly depressed to see that it did not.

Did Google give a reason as to why jMonkey was not accepted?

Nope, not yet. As explained on the forum already, I’m hoping to attend a meeting this Tuesday tomorrow and learn more.