[dB Cooper]

...in a half-assed way possibly, but it's only in developer beta and a lot of details remain to be seen.

There are apps like VOX and others that "support" it now but the files never seem to work. So we'll see. One article suggested that supporting FLAC would require a "major re-work" of itunes, which seemsa little hard to believe.

https://www.theverge.com/2017/6/6/15747518/apple-flac-lossless-audio-compressed-alac-ios-11