The exhaust leak will eventually completely burn through the manifold gasket, which can eventually cause damage to the cylinder head. It's something you will want to have fixed, trust me.
I would fight like hell to have it covered under the PZEV warranty. Mine was still under the extended factory warranty, so they covered it. They actually went ahead and replaced the entire turbo because they claimed the exhaust manifold was "damaged".
FML! Just called to verify my extended factory warranty that came with my car and OF COURSE ... it expired at the end of August. Going to call to ask if there's some kind of grace period but it looks like I'm going to have to hope and pray the dealer will cover it.
Thanks for the heads up on repairing the leak ASAP. Anything else I should have done for a 70K car while all that is out? Besides a K04