We already brought you details on the Samsung Impulse 4G, which is expected to be one of AT&T’s first 4G LTE devices, and now new information is available on another 4G LTE phone dubbed the HTC Holday. Engadget recently published specs and photos of the Holiday, which is said to sport a 4.5-inch qHD display and a 1.2GHz dual-core processor. It is also equipped with an 8-megapixel camera, a 1.3-megapixel forward-facing camera for video chat, 1GB of memory, 802.11b/g/n Wi-Fi and Bluetooth 3.0. The Holiday, which may reportedly launch as the HTC Waikiki when AT&T makes its official announcement, will also run Android 2.3.4 (Gingerbread) with HTC’s Sense 3.0 custom user interface on top. AT&T will deploy its 4G LTE network in Atlanta, Chicago, Dallas, Houston and San Antonio this summer before it extends the network to at least 15 markets later this year. Read on for more images of the Holiday/Waikiki UI.