This was automatically integrated in Dreamweaver CS3 and took this into consideration. While browsing the latest code for SWFObject on Google I stumbled upon this link: http://www.swffix.org/devblog/?p=19
Which is pretty good news. So these would come into effect about now. However, we never know about clients, and the relunctancy of users and IT people to upgrade so I do not know for how long that this shift would be completed. At least, it is a wonderful move in the right direction.
For more info on SWFObject (at the time of this blog, it is at version 2) click here.