Xen Cloud Platform (XCP) 0.1 is an effort by several community members to create a complete open source virtual infrastructure solution (Hypervisor + Management Toolstack) as a reference architecture for cloud deployments.
This 0.1 release provides a stable platform on which to build, and to provoke community discussion about the final form that XCP 1.0 should take. Developers, testers, and users are all invited to try the XCP 0.1 solution and help drive the community toward the future release of XCP 1.0.

The base platform proposed contains the following features:

• Latest Xen 3.4.1
• Linux 2.6.27 Kernel
• Windows PV Drivers, Microsoft Certified (Binary Only)
• XAPI Enterprise-class Management Tool Stack
  • VM Lifecycle: Live snapshots, checkpoint, migration
  • Resource Pools: Safe live relocation, auto configuration, DR
  • Host Configuration: Flexible storage management, networking, power management
  • Event Tracking: Progress, notification
  • Secure Communication using SSL
  • Upgrade and Patching Capabilities
  • Real-time Performance Monitoring and Alerting
• Basic SR-IOV Support
• CDROM and Network Host Installer
• Full Featured "xe" CLI and web services API

For more information, please visit these sites:

General Product Info - http://www.xen.org/products/cloudxen.html
XCP Roadmap - http://www.xen.org/products/cloud_roadmap.html
User and Developer Support - http://www.xen.org/products/cloud_support.html
Source and Binary Distributions -http://www.xen.org/products/cloud_source.html
XAPI Toolstack Developer Guide - http://wiki.xensource.com/xenwiki/XAPI_Developer_Guide

All questions on the XCP 0.1 release should be directed to these mailing lists:

XAPI Toolstack Questions -xen-api
Developer Questions - xen-develwith XCP in subject line
User Questions -  xen-userswith XCP in subject line