To be honest, when I came across this news bit few days ago, I thought it was a 4/1 prank sort of thing and never got the instinct to check it. When I saw the same news again, I decided to verify it thinking if Microsoft too could do such things. Wow! Yes, it’s true!!! SPD 2007 is completely free (no trial version) from April 2, 2009. Read the official news and download SPD 2007 (after Passport registration) at http://office.microsoft.com/en-us/sharepointdesigner/HA103607611033.aspx.
The official blog news is here: http://blogs.msdn.com/sharepoint/archive/2009/04/02/sharepoint-designer-available-as-a-free-download.aspx
As you know, SPD is the next incarnation of FrontPage, a HTML Editor and the only tool (apart from WSS/MOSS web UI itself) available for customizing Windows SharePoint Services 3.0 & MOSS 2007 based portals/sites.