Acer launches the Tempo line of mobile phones. The four new phones include the X960, F900, M900 and DX900. They are all touch-enabled and based on the Windows Mobile OS. The first set of devices will be based on the existing version of Microsoft’s Windows Mobile OS.

The M900 comes with a QWERTY keyboard, a 3.8-inch screen, and a fingerprint scanner. It also has HSDPA (High-Speed Download Packet Access) support, built-in GPS (Global Positioning System), and a 5-megapixel camera. The F900 also comes with a 3.8-inch screen and features a 3.2-megapixel camera, and you also get faster uploads using HSUPA (High-Speed Uplink Packet Access) and support for Wi-Fi. Both phones will start shipping at the end of March or the beginning of April.

It’s unclear if Acer’s upcoming DX900 smartphone that is actually a rebranded E-Ten Glofiish DX900, is Acer’s much hyped new smartphone. The company is likely still keeping most of their newly developed items under wraps. But if this is the phone they were talking about, then color us disappointed.

All the innards are unchanged: Dual SIM support, GPS navigation, Wi-Fi and Bluetooth connectivity, a 3 megapixel camera and a 2.8″ VGA touchscreen display, all powered by Windows Mobile 6.1.