So, after year long ICO and many extensions, plan was to list BWN on "reputable" exchange such as P2PB2B on October 1st, right after ICO sale that supposed to be over on September 31st. But, since Ethereum blockhain (or any other for that matter) is not approriate for something as advanced as Bitwings ecosystem is, with their smartphones scooters, laptopts, tablets etc they decided to develop their own blockchain, or as they call it "WingsChain". Developing something as advanced as WingsChain takes time, so naturally they decided for one more sale extension until "early 2021" and therefore postponing exchange listing too.