The as-yet-unannounced Treo Pro, formerly known as the Treo 850, sports clean, sculpted lines, a black finish with silver trim, and other features Palm fans have been waiting for.

According to the annotated online photo, the Treo Pro includes a 2.4-inch, 320-by-320-pixel touch screen, a micro-USB connector, microSD expansion slot, and a long-awaited headphone jack. The unit is supposed to include both Wi-Fi and GSM. The snatched information, most clearly on display at Gizmondo (http://gizmodo.com/5037301/palm-treo-pro-revealed-best-looking-palm-ever), seems to indicate that the device will run Windows Mobile 6.1 Professional rather than the not-yet-released refresh of the Palm OS.

Specs Grabbed from the Web

The Pro seems to be a variant of the Palm Treo 800w that is on the streets now, with some keyboard layout differences. The current Treo 800w, a CDMA network phone, includes GPS -- so odds are the GSM version of the Pro will, as well. A camera port is clearly labeled on the captured photos, but there is no indication of the resolution. The current 800w has a two-megapixel camera. Speculation is that T-Mobile or AT&T will be the first carriers to offer the Treo Pro with their GSM 3G networks.

According to one source, the following unconfirmed specs were grabbed online:

* 14 mm in thickness, width 60 mm, and length 113 mm

* GSM, EDGE and UMTS HSDPA 3.6

* GPS

* Wi-F 802.11b/g

* 320-by-320-pixel screen, touch panel

* microSD slot under the battery

* Two-megapixel camera

* 1500mAh battery

* A micro-USB connector for both power and sync

* Bluetooth 2.0 EDR + A2DP, 256MB NAND Flash, 32MB SDRAM

* Windows Mobile Pro 6.1

A Troubled OS Past

If reports are true, Palm is shipping yet another product without the much-awaited next-gen Palm OS. The company has promised -- and has not delivered -- a number of OS refinements over the years, but continues to fall back on Windows Mobile when it comes to smartphones. The company's PDAs -- sans phones -- have not had a new OS in years and continue to drop market share against Windows Mobile PDAs.

A new OS platform was promised in 2004, but was never shipped. And it appears the much-vaunted Linux-based OS has been scraped, as well. This leaves analysts wondering if Palm will ever release its own OS for smartphones or continue down the current Windows Mobile OS path.

While delivering stable products to healthy demand, Palm has experienced losses in the last year. As a result, the company has cut back on unprofitable ventures, such as shuttering its PalmOne retail stores, to focus on the most lucrative of its product lines: smartphones. The PDA line has not seen a refresh since 2007.