This is what I posted last week when I thought I would get a "first batch" F9.
"I mean don't get me wrong, it kinda bugs me too, to buy something then find out a better version is coming out(looking at you, Nintendo). But in this case it's just minor engineering improvements most people aren't even going to be aware of being implemented in the first place.
Unless they sound better...
(just bought my F9 this morning)"
Anywho... Really enjoying my F9. Not having treble issues either. Granted, been using foam tips the whole time. Not sure where I got these but they could prove useful to anyone who's especially treble sensitive.
Not only are they foam but they have a wax guard or something in there. I think maybe they came with my old Flare R2. Not currently rocking those tips, just an FYI.