Thanks to the work of Massimo Tantignone and Elena Novaretti, PowerIcons has now been ported to AmigaOS 4.0. Screenshots are available <a href=http://www.hyperion-entertainment.com/powericonsnap1.png>here</a> and <a href=http://www.hyperion-entertainment.com/powericonsnap2.png>here</a>
PowerIcons for AmigaOS 4 supports all the features of the original version, including Alpha Blending.