VIP Mail filtering – Every professional has some contacts that are more important than others. Your boss, certain employees that report to you, high-profile clients/customers, and key suppliers or consultants are some examples. These are often people who you need to hear from regardless of what else is going on. The new VIP feature in Mail allows you to easily designate those people as VIPs. Messages from get special treatment including notifications in your iPhone or iPad’s lock screen ensuring that you know immediately if there is a problem, a change in plans, or other information that you need to act on quickly.
Finally. I don't expect this iteration to be as powerful as the Blackberry's email alert system but at least it's a start.