I really hate to see Bitcoin continuously being attacked by some ignorant people that Bitcoin cannot be used as a currency because of the current slow processing speed and high transaction fee.
It's not exactly a roadmap but this article https://www.coindesk.com/lightning-bitcoin-scaling-tech-really-know/ from a couple of weeks ago gives a pretty good indication of where things are at the moment.
"It's fairly close to working to the point where the public can test with real money, but not necessarily at the point where people can operate a business on it quite yet."