Having already leaked three other devices (Sirius, Wings and Erato), HTC seems to be in a smartphone manufacturing spree. The two the present article refers to are the P4550 Kaiser and the P3450 Elf handhelds, two PDA phones that feature Microsoft's latest mobile OS, the Windows Mobile 6.

For now, there haven't been any official statements from the smartphone manufacturer regarding the 5 handsets that got "wild" in the last few days but each of them already has an attached (not definitive) specification sheet.

The Kaiser is a Pocket PC that will run a Windows Mobile 6 Professional operating system on a Samsung SC32442 400 MHz processor, aided by 256 MB of ROM and 64 MB of RAM memory.

It will also feature a 2.8 inch 65k colors TFT touchscreen display working at a 240x320 pixels resolution, WLAN WiFi 802.11 b/g connectivity, GSM 85-, 900 and 1800 MHz radios, UMTS working on 800, 850 and 2100 MHz networks, HSPDA, EDGE, GPRS and CSD data transfer technologies, built-in SiRF Star III GPS, a full featured side sliding QWERTY keyboard, microSD memory expansion card slot and a 3 megapixel digital camera.

The Elf is also a Pocket PC device, also running WM6 Professional OS, a TI OMAP 850 200 MHz processor, a 2.8 inch 65k colors TFT touchscreen display, 128 MB ROM and 64 MB RAM memory, quad-band GSM 850, 900, 1800 and 1900 MHz radio, UMTS 850 MHz, USB and Bluetooth 2.0 connectivity, EDGE and GPRS data transfer technologies, SD and MMC memory expansion card slots and a 2 megapixel digital camera with CMOS sensor and camcorder abilities.

I have to remind you the above spec sheets are not the official ones so any feature contained in the description can change according to the official manufacturer specifications (when published).

There are no official release dates or prices known yet but the rumors say the Elf is probably coming on the market sometime during May and the Kaiser in June.