I thought this product deserved a thread of its own. http://flashhavoc.com/yongnuo-yn560-tx-revealed/ They are available on Ebay at a price of around US$100. Most importantly I should point out that this transmitter is brand new. There dont seem to be any reviews out on it yet. I have ordered one so hopefully I will be able to post a mini review when I get and confirm it works with the M43 cameras although there is no reason why it shouldnt. For those who have the Yongnuo 560iii this transmitter is pretty exciting. The Yongnuo 560iiis has a built in receiver that works with this transmitter. In addition this transmitter allows you to set the power on each individual flash from the transmitter.