While Android 4.2 may have brought a number of enhancements, it also brought its fair share of issues to the platform. Among those, there has been a real problem with Bluetooth – especially when it comes to A2DP streaming audio. Basically, audio lags and cuts out constantly, making a streaming experience far more frustrating than enjoyable.
Good news, though – Google has just confirmed that this issue will be fixed "in the next release," which should be Android 4.2.2. Here's to hoping this fix also has a positive effect on other Bluetooth devices – like game controllers and the like (most of which simply don't work on 4.2).