AT&T releases the HTC Vivid, one of the first AT&T 4G LTE-capable Android smartphone. Powered by a dual-core 1.2GHz processor, the Vivid 4G comes with 1GB of RAM and 16GB internal storage. It comes with a 4.5-inch large qHD 540×960 touchscreen, a 8 Megapixel camera with auto focus, dual LED flash, f/2.2, 28mm lens; a 1.3 Megapixel front-facing camera for video chat.

Verizon introduces the HTC Rezound (codenamed Vigor), the first smartphone in the US to feature Beats Audio integration. With Beats Audio integration, the new phone has “unique audio tuning by Beats that delivers thundering bass, soaring midrange and crisp highs”, and comes with the new lightweight Beats headphones with built-in microphone and in-line remote control.

HTC announced the new Explorer affordable Android smartphone for all. The compact phone comes with a 3.2-inch touchscreen and a 3 Megapixel camera. Running Android OS, the Explorer includes HTC Sense UI for intuitive use and Smart Dialer for making phone calls easily.

HTC announced the new Sensation XL, an update to the original Sensation/Sensation XE, featuring a larger screen and Beats Audio. The new XL sports a 4.7-inch 480×800 capacitive touchscreen and comes with Beats Audio and SRS Surround sound for “ultimate multimedia experience”. The new phone runs Android 2.3 with HTC Sense UI.

T-Mobile is launching in October the new HTC Amaze 4G (aka HTC Ruby) Android smartphone that will be the carrier’s first smartphone to take advantage of T-Mobile’s faster 4G (HSPA+ 42) network. The new phone is powered by Qualcomm’s SnapDragon S3 1.5GHz dual-core processor with 1GB of RAM and runs Android 2.3.4 Gingerbread OS with HTC Sense.

HTC has just announced the Rhyme, an elegant Android smartphone with a sleek new design and refreshed HTC Sense experience. According to Scott Croyle, vice president of design of HTC, the Rhyme “represents an entirely new approach, based on recognition that there is a substantial group of consumers who want their phones to be more personal and complimentary to every moment of their day.”

Other than the flagship TITAN, HTC also brings the Radar, a more affordable Windows Phone 7.5 Mango smartphone. It sports a smaller 3.7-inch 480×800 touchscreen, a 5 megapixel camera with F2.2 lens, LED flash, BSI sensor and 720p HD video recording, a VGA front camera, Bluetooth, GPS capability and WiFi connectivity. It has an aluminum unibody.

HTC announced the new TITAN (aka Eternity) smartphone running Microsoft’s new Windows Phone 7.5 OS, codenamed Mango. The phone is boosted by a 1.5GHz processor with 512MB of RAM. It sports a 4.7-inch large 480×800 touchscreen, a 8 Megapixel camera with F2.2 lens, dual LED flash, BSI sensor and 720p HD video recording, and a 1.3 megapixel front camera.

As you may know, HTC has partnered with and invested in Beats Audio. Now, the cellphone maker announced its first phone with integrated Beats Audio, the HTC Sensation XE, an upgrade to the original Sensation. To offer a Beats Audio experience — a combination of software and hardware, the phone comes inbox with custom made Beats headsets, engineered to deliver extraordinary sound; and is pre-loaded with specially tuned software and user interface.

T-Mobile launches the myTouch 4G Slide Android smartphone, produced by HTC. This new Android device has a slide-out QWERTY keyboard. Running Android 2.3 Gingerbread with HTC Sense 3.0 on Qualcomm’s dual-core SnapDragon MSM8260 1.2GHz processor, the phone supports T-Mobile’s HSPA+ 4G network.