Sprint and Motorola have just announced the successor to the last year’s push-to-talk i1 with the Android 2.1-powered Titanium.  Built with the same military-grade specifications as its predecessor, the Titanium features a full QWERTY keyboard, a 3.1-inch touch screen, and 5-megapixel camera.  Like the i1 before it, this Motorola phone  is designed for the Nextel Direct Connect network and also supports Wi-Fi (802.11 b/g), GPS, and Bluetooth.  No price or expected launch date just yet so look for those in the near future.