Apple's email was straight forward and to the point (high signal to noise). The "solution" needlessly tacks on boilerplate, and divulges additional information

Apple's email was straight forward and to the point (high signal to noise). The "solution" needlessly tacks on boilerplate, and divulges additional information about the user in the email. If someone's iTunes account has been compromised, it is possible that their email account may have been as well. Best not to show too much. The actionable item in Apple's email is very clear: change my password, and then learn how to be more secure. In the "solution," it is not. You need to "associate [my] new device with [my] Apple ID"? Huh? Do I need to re-register my current device, or what? I'm all for using Bayesian inference behind the scenes, but don't needlessly flood the user with excess information. Tell them what's up, and what they need to do. Withholding information could be helpful later, should the user need to verify their identity over the phone (for example). Sending an email when an account is used for the first time on a new device is not a bad idea, but it could become another hoop for the user to jump through, and again, their email may also be compromised.