Yeah, IBM just announced an initiative to do that:
From the page:
IBM Smart Business Desktop Cloud
The IBM Smart Desktop Cloud allows users to connect to a virtual machine operating system on a central server, using a thin-client or PC, running Java™ and an Internet browser. Security-rich and scalable, the Smart Desktop Cloud delivers a resilient, standards-based desktop environment and system image (Windows or Linux).
IBM Smart Business Desktop Cloud is available with IBM Project Based Services, if you'd like help designing and implementing a solution, and can manage the cloud once it's up and running. Or, IBM Managed Services is available for organizations that are interested in having IBM not only design and implement a Smart Business Desktop Cloud solution for them, but also to manage the centralized data - including updates and information security.