Some friends in the local 8-bit micro hobby have whipped up a clone of Commodore's VIC-1112 IEEE interface for the VIC-20 computer. The news has probably permeated most of the C= scene but I figured it was worth dropping here for maximum exposure. I saw the prototype working at VCF Midwest earlier this year. They're funding it through Kickstarter and have reached their goal, so production is sure to go ahead. You've got your choice of a DiY board, assembled board or a fully cased cartridge.
Just over 60 hours to go: https://www.kickstarter.com/projects/1203958506/vic-20-ieee-interface -j