After months of leaks and reports, Bose has finally unveiled the QuietComfort 45 headphones. The company says that Bose QuietComfort 45 will replace the successful QuietComfort 35 II headphones and comes with an improved noise cancellation feature. Bose has also introduced a new Aware mode with the Bose QuietComfort 45, which lets users hear what is happening in their surroundings …