Possibly the most interesting new thing in the BizTalk space talked about in the Mvp Summit, and up until now confidential, is BizTalk Services, Microsoft’s Internet Service Bus. This is still in CTP space, and available here. This will be in the future of BizTalk, so if you work in the integration, BPM or SAAS space, this a site to visit regularly.
At the moment you have some links to info already published on BizTalk Services, the download of the SDK, and information about 4 technologies: BizTalk Identity Services, BizTalk Connectivity Services, BizTalk ServiceBus Services and BizTalk Workflow Services. Not much is available yet, but I expect the following months will bring more information and downloads in this space.