See the article link for details (but don’t expect surprises – it’s the usual PaaS storage, compute, and shared services, etc.); also see additional details via The Register
Hewlett-Packard CEO Leo Apotheker announced that HP was making a big push into cloud computing last month, but didn't go into much detail, except to say it was building "platform-as-a-service" (like Microsoft's Windows Azure) and "infrastructure-as-a-service" (like Amazon Web Services) clouds.
Today VP of cloud services Scott McClellan updated his LinkedIn profile with a bunch of details on exactly what HP is building. The Register published it before McClellan had a chance to pull it back.