HotSpot VM now has own release train: Hotspot Express.
Therefore it should have own version separated from JDK version:
<major version>.<minor version>-b<nn>
The first version will be "10.00-b15" which is currently
"1.6.0_03-ea-b02" since we forked current VM after b14.
Current VM will be "11.00-b03" which is 1.7.0-ea-b17 now
or "11.00-b04" for b18.
The <minor version> will be used for already released VM which
needs a point fix for our big customers.