On July 2 the Department of Homeland Security released a statement about electronic devises on planes. Flyers may have to turn on their electronic devices and show security screening staff.
Screening staff may ask flyers to turn on laptops, tablets, and phones. This could result in longer wait times through security.
If you have those devices, it may be a good idea to keep your electronics charged and ready to go. You can always power them off once you make it through security. Also not a good idea to let your batteries die before you go through security.