The actual project announcement:

http://www.jroller.com/neugens/entry/introducing_icedrobot

And if they're running on OpenJDK, their runtime would be covered by the OpenJDK patent grants, which might allow one way to sidestep the current Oracle/Google patent litigation over Android's Dalvik. Unless Oracle's legal department comes up with some chicanery to block their supposedly GPLed, open-source codebase from being loaded on a mobile phone.

(Disclaimer: IANALawyer. Consult your own before betting your company.)

You'd better consult a lawyer I if you're planning on running anything other than GPL software on a phone, because I'm pretty sure the classpath exception doesn't apply on mobile platforms, meaning that anything you run on the GPL JVM must itself be GPL.

Well, I don't see any platform restrictions in the text of the classpath exception here: http://openjdk.java.net/legal/gplv2+ce.html

I know they require that an alternative implementation have platform restrictions before they'll let it run the TCK (which was the problem with Apache Harmony), but I don't see any in the license for OpenJDK itself. Is there some other source I should be looking at?

Full text, from there (applying only to source files that specifically say "subject to the 'Classpath' exception" in the header):

    Linking this library statically or dynamically with other modules is making
    a combined work based on this library.  Thus, the terms and conditions of
    the GNU General Public License cover the whole combination.

    As a special exception, the copyright holders of this library give you
    permission to link this library with independent modules to produce an
    executable, regardless of the license terms of these independent modules,
    and to copy and distribute the resulting executable under terms of your
    choice, provided that you also meet, for each linked independent module,
    the terms and conditions of the license of that module.  An independent
    module is a module which is not derived from or based on this library.  If
    you modify this library, you may extend this exception to your version of
    the library, but you are not obligated to do so.  If you do not wish to do
    so, delete this exception statement from your version.

If use the J2SE code (which is GPL with classpath exception) you can't run the TCK. Without passing the TCK you can't call it Java, and you don't get the patent license. See here: http://skife.org/java/jcp/2010/12/07/the-tck-trap.html

If you use the J2ME code, presumably you can get the TCK for mobile use (and associated patent protection), but the license doesn't include the classpath exception.

And that applies even if you're running OpenJDK unaltered, which is certified as passing the TCK by Oracle itself?

It would be nice to try android application in desktop browser before buying. With this project I believe it would be not so hard to create applet (or how they are called in 2011) for browser and show some features of your android application without installing to device.