The long-awaited Powerbeats Pro 2 could make their official debut in little more than a week from now. In the Power On newsletter, Mark Gurman reports that sources have told him the $250 earbuds will arrive on February 11 and boast heart-rate monitoring on top of upgrades like an H2 chip and improvements to noise cancellation. We should also see some new colors, like orange, according to Gurman. B [...]