I didn't know there was an Itanium Solutions Alliance, but this article includes the road map for Intel's continued commitment to Itanium, notably, going to a single-die quadcore.
I noticed a display for the Itanium JVM in the Intel booth at JavaOne, and it is also mentioned in the article, but it doesn't specify the OS. We are looking forward to testing on it as soon as we can.
As you can see here, we achieved great results in our scalability tests on the 32-core HP Integrity server running the HP-UX JVM, developed by HP.
These unit growth numbers are very impressive as well:"...On another front, the Itanium Solutions Alliance announced that worldwide annual Itanium-based factory system revenue and system volume continued to grow in 2007, with a year-over-year increase of 30.8 and 36.3 percent, respectively. The Asia-Pacific region led the way, with year-over-year growth in factory system revenue and system volume of 61 percent and 45 percent, respectively."