2019 was supposedly going to be when they brought out the all new singing & dancing multi-platform but mobile focused Winamp v6.
Websites can say anything that they want & also what they said in both 2014 & 2018 interviews hasn't been the case. Same goes for the "working hard on things" as the version of the site from 2014 until the redesign for the 5.8 beta indicated the same message of apparent development activity despite the formal halting of working June 2014 (not a meeting I particularly enjoyed being in!).
There are signs of major issues with the organisation that owns the rights (e.g. shuttering of their original Radionomy streaming platform, not paying out rightfully earned ad revenue along with changing the terms to put off when it needs to be paid & then ignoring that & the inept handling of SHOUTcast) which makes it hard to believe they've actually bothered to take anyone one to develop what they've talked about.
They didn't want to keep paid developers & did the 5.8 beta mostly in 2016 by getting ex-devs to do it for free which is a piss-take however you look at it. Since as much as I don't like some involved with that, if you do work on it then you need to be recompensated for it.
Likewise I've made my decisions & WACUP is going to continue irrespective of what they may or may not put out as they've made it clear they're not interested in Windows development (one of the few things they've actually been honest about in the little information they have stated) & mobile is the piece of the pie they want but it's far too late.
Anything that comes out would be massively behind the curve with other mobile solutions unless they've hired / outsourced it to a large & knowledge dev team who can get something up to comparable feature parity (which is somewhat unlikely just like how Winamp for Android was struggling & that was with being at least a year behind the curve when it appeared in 2009/10, so a decade on, it's even harder imho).
-dro