This non-falsifiable rumor comes up twice a year. "Hey, just because it was false every other time, doesn't mean it's false this time too!!!" Hint: If you break a non-falsifiable rumor on the Monday of Christmas week, then you can pretty much count on difficulty contacting any PR speakers to quote.... ;-)
The Register's piece was apparently syndicated from the subscribers-only ComputerWire, and no author's name was on the article. The article contains a number of complimentary statements ("Microsoft's own scripting efforts are regarded as relatively inferior to the cross-platform Flash", "The ColdFusion web application server is regarded as superior to ASPs and even JSPs because of its simplicity, power and completeness," eg), but also contains some wacky stuff ("ASPs" and "JSPs"? "Macromedia, meanwhile, said it was bringing its estimated 300,000-strong community of developers to J2EE, potentially expanding the pool of J2EE programmers.") We try to work on top of anything... J2EE if you're using that, .NET if you're using that, PHP or whatever you like, the Macromedia tools try to just get out of your way and let you choose the environment.
Update: On Dreamweaver-Talk, Stephanie Sullivan goes back through some of the previous iterations of this hot news items. More info available by Googling "debunking internet rumors" such as this "how to test" article at TruthOrFiction.com.