As a part of the announcement, Adobe is publishing exactly how the SWF format works without restrictions, and removing all other barriers to getting Flash on the widest range of devices. Set top/cable boxes, all mobile phones, televisions, your appliances... anything technical, really. Even those devices without a screen and/or user interface. Bill Perry does a great job of going into more detail on the implications for devices on his blog.
Ryan Stewart has a great post explaining all the implications of this announcement, for devices and desktop computers alike. He goes into more detail on the several parts of the announcement, so it is worth the read.
As someone who makes their living from the Flash ecosystem, you should care greatly about this announcement. It may not seem like it to a non-developer, but this is huge for anyone who knows how to use Flash. The thought of having Flash everywhere is finally a reality for those who want to include it in their products as a user interface layer, or even to allow developers to control the product using ActionScript. And this means that your capabilities to design, develop, and then deploy your Flash experiences just became more marketable and useful.
Lastly, as a member of the Flash community, you should also be excited about the implications this has on open source projects such as SWX, AMFPHP, and the like. The more open the specifications surrounding the various parts of the Flash ecosystem, the easier it is for members of the community to create tools and open source projects which contribute to the growth and prominence of said ecosystem... and make all of our lives as participants in that ecosystem that much more interesting and fun.