If you happen to own the Galaxy Tab 4 8.0 on AT&T then you have a good reason to keep checking your notifications because the carrier has released the much awaited Android 5.1.1 update for this tablet. AT&T is rolling out the update right now but it could take a while before it's available across all regions in the United States. Android 5.1.1 for AT&T Galaxy Tab 4 8.0 brings some improvements to the Quick Settings menu as well as security updates and performance improvements, it weighs 800MB so you would be better off downloading it on a strong Wi-Fi connection instead of over mobile data.
AT&T has only released the Android 5.1.1 Lollipop update for the Galaxy Tab 4 8.0 despite the fact that just yesterday Verizon also released the same update for this tablet as well as the Galaxy Note Pro 12.2. So far there has been no indication of an impending update for the Galaxy Note Pro 12.2 from AT&T so those who own this particular tablet can keep their fingers crossed.