Sound Devices has just announced a series II of their "MixPre" 3/6/10 recorders, also featuring 32-bit float data storage, and unfortunately, publicized in the same misleading way as Zoom. See
https://www.sounddevices.com/32-bit-float-files-explained/ .
A chain is only as strong as its weakest link. They've taken the strongest link and made it much, much stronger. (Hooray!)
Now if only their recorders' inputs could just have a slightly lower noise floor--a mere 600 dB improvement would nearly suffice--and headroom that's correspondingly on the high side, then we could take advantage of these improvements. Just be sure to refrigerate your less-than-one-Ohm quantum microphones to less than 1 Kelvin (0 Kelvins being absolute zero temperature) from now on--this should add very little bulk to a hat for stealth recording. Also, if your microphones can take a direct lightning strike and the recorder's inputs still don't come close to clipping, then you're good to go.
Withering sarcasm aside, the example that they give of a recorded peak that's above 0 dBFS and is still preserved unclipped in the floating-point sound file, is possible only to the extent that the recorder's input circuitry (mike or line preamps) and a/d converters don't overload and clip. And good recorders do overload "gracefully" up to a point.
But defining that point is a critical engineering decision. If the circuit designer allows (say) 6 dB of overload without producing ugly-sounding output,
that is not for free--it comes at the expense of the lower noise floor that the recorder could otherwise have had. It's a "be careful what you ask for--you may get it" type of situation.
Executive summary: This may be considered progress of a kind, but it still matters what levels you set when you record, for the same reasons as ever.
--best regards