Of course, you could always just say ‘as soon as possible’, which would have the advantage of being actual English.

Yeah, I’ll revert to you soonest.

Quite aside from the wearisomely inaccurate use of the word ‘revert’, it seems that the entire corporate world is falling for a strange new use of the word ‘soonest’.

All of a sudden, it means “as soon as I can” whereas previously, assuming soonest was ever a word, it must have meant something like “the most soon”.

Hmm. Soonest isn’t a thing because It was never really a word in the first place. Not one you’d ever use anyway.

And now it’s a word that doesn’t even make sense. Which is, I suppose, some kind of progress.