I'm glad they intend to work some more on Android 3.0 before releasing it into the wild. Everything you read and hear about it indicates it's not ready for prime time. So I, for one, am thankful that they're acknowledging that fact, and intend to improve it rather than releasing buggy code. (Not that I, or most people for that matter, ever had a need for the source code - I think for Android users and developers it's largely a non-issue. Very few people dig down to that level.)
The source code for the other versions of Android are available. Sounds like "open source" to me. I think it's a little early to blow the whistle on Honeycomb.
Also, from an article in Information Week ,
"The disconnect is that open source idealists view "open" as a binary concept -- software is either open or not. Google has, for better or worse, adopted a more nuanced definition in order to manage the complex Android ecosystem and to protect its own interests"...
"A problem well stated is a problem half solved.” - Charles F. Kettering
SCJP 6, OCPJWCD