Some insight into the Android changes, looks like Skyhook may have been the tipping point for this:
http://thisismynext.com/2011/05/12/google-android-skyhook-lawsuit-motorola-samsung/One part of the article talks about the rumored Amazon Android tablet, and how a contract between Samsung and Google may hinder it, if Amazon was going to have Samsung manufacture it.
Samsung’s amended license prohibits it from doing anything “that may cause or result in the fragmentation of Android,” including creating any SDKs that are based on Android or assisting any third parties in developing an SDK based on Android. What’s more, Samsung’s agreement also requires that the company only distribute Google-approved Android hardware and only distribute software on Google-approved devices. We don’t know if Samsung’s current agreement includes a similar clause, but those whispers of Samsung building Amazon’s rumored tablet are certainly implicated if it does.
Google also confirmed at I/O 2011 that Honeycomb (both 3.0 and 3.1) will
remain closed.