FLAC 1.4.0 (https://xiph.org/flac/2022/09/09/flac-1-4-0-released.html) dropped a few days ago, which makes 32-bit audio encoding and decoding possible. Will the next update ship with FLAC 1.4.0?
Yes, the next 1.30 update will be able to read 32bit FLAC.
1.31 will also support 32bit FLAC stream export, however there will only be 28bit valid data due to how the OpenMPT mixer is implemented.