I see a lot of people claim that Titanium is brighter. I find it amusing that silver is also said to be brighter, while copper is warmer (interesting it corresponds with the colour of the material eh)? What's the bet that if we had sighted tests of gold wiring/plating - the claims are that it would be warmer too (I digress - ignore me
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The difference will almost certainly be in tuning changes they make as well. They won't simply be coating the driver with titanium and releasing it as a new model. Now if the keep the same warm, muddy sound - I'd personally run a mile. It does seem to be the target for that series though - A71, A81 both dark IEMs - whereas A83 and supposedly A73 are supposed to be the more balanced.
If anyone gets a pair of the new A71 I'd love to be wrong (for Fidue's sake) - but I'm not expecting to be.