AT&T and HTC on Monday announced the new HTC Aria, a pocket-sized Android smartphone that will be available exclusively through AT&T starting later this month. Based on the Android 2.1 platform, the WiFi-capable Aria sports a 5-megapixel camera and a bright 3.2-inch HVGA display along with 3G speed, a capacitive touchscreen and an optical joystick. The device is compatible with AT&T’s HSPA 7.2 Mbps technology, which provides “a considerable boost” over 3G speeds when combined with expanded backhaul, AT&T said.