Within this little blog-post you can find the SharePoint Workflow Project Templates that I have used in my Demo Extravaganzza session on Tuesday - they are also available within the ECM Starter Kit as an installer-package. As I have used these templates with a build very close to the final release I expect those templates to work with the final release as well. To install the templates, please follow the following steps:
If you want to have a more convenient way of installing the templates, they are part of a sample project which has been published on MSDN. Finally these templates are part of the Enterprise Content Management Starter Kit which has been released for Beta 2 of Office SharePoint Server.