^ Well even if they get rid of theirs also, I think it's more to do with the continual game of one-upsmanship and marketing stance than anything else.
Infiniti has no forced induction motors at the moment, and their 2.5L V6 in the G25 is said to be pretty refined and smooth and has a nice note. 7500rpm redline. Not quite as fast as an N52B30 because it's only 2.5L, but might be a pretty good substitute. I don't think it's likely that Honda/Acura is going to do away with NA powertrains, but it's a shame their entire product lineup is a snoozer at this point. Lexus pretty much all bore me but no turbo powertrains there either. So I think the 'NA torch' will continue, just a question of who will carry it, and if they'll manage to build anything worth buying.
I've changed my sig in honor of BMW's decision to drop NA engines.