Adobe just announced that Content Server 5 can now generate HTML5 output. Even though HTML5 is a direct competitor to Adobe's proprietary formats (Flash, Air, etc), I'm not surprised.
What, did you really think they were only going to rely on Flash? No, they're too smart for that. Adobe develops software tools that help you make content. They don't really care what form that content is-just so long as you keep buying their tools.
From the Adobe Blog:
Adobe delivered some very exciting news this morning at the Google I/O conference, where our chief technology officer Kevin Lynch, announced the immediate availability of a new HTML5 Pack extension for Dreamweaver CS5. The extension demonstrates Adobe's commitment to supporting its customers with the tools and technology they need to remain on the cutting-edge, so they can continue to create compelling content and move their businesses forward.