With the new Streets of Rage vinyl that is now at (data-discs.com), they have this in their description page:
Audio sourced from the original NEC PC-88 files, recorded and supplied in 32bit/96kHz by Yuzo Koshiro, in combination with a 32bit/96kHz direct capture from a PAL Mega Drive (HD, VA4, non-TMSS) Yamaha YM2612 sound chip, running at 60Hz through a stereo output mod.
Yet they have no plans to do a digital release as well. Imagine those original 32bit files being released(!)