I notice a constant squeak near the front of the engine during warm-up.

Still persists with belt off.

OK , now we need to know if it's the 2.0L turbo , or the 3.2V6

It is the 2.0L turbo.

How often do you do oil changes & do you use factory filter? I would not ignore it , it might get a LOT more expensive.

I use the factory air filter and quality 5w40 synthetic motor oil changing at 5k mi. Perhaps the timing belt maintenance will take care of it. Thanks.

Squeak not at all engine /turbo speed related? Just a thought.Bearings in turbo may be starting to go.