Its nothing new, its just not mainstream. Some of my older books also refer to them as 'Dutch Reefs'. J&L always seems to have a modest selection of macro algae to choose from these days. You may also want to consider just buying some fresh new liverock and seeing what pops up.
Ska's 28 Macro Algae Display is one of the few on this forum
http://www.canreef.com/vbulletin/showthread.php?t=43602