Tantalising images that are claimed to show Palm's upcoming low-end Treo smart phone have been posted on the web. The shots show a blue device with a screen and keypad not unlike those featured on the current Treo 650 and - crucially - no external antenna.

The pictures appear on fansite Treonauts here and here. In the two apparently separate postings, the machine is suggested to be, respectively, the upcoming 'Hollywood' and 'Lowrider' Treos, both rumoured to be due to ship in Q2.

The shots are of a pretty poor quality, and as always there's no clear way of showing they're not fakes. However, some slight differences in the area surrounding the navigation control and the call make and break buttons suggest the pics may not simply be a Treo 650 with the antenna Photoshopped out and the colour changed. The pictured machine looks even less like a Treo 700w.

Palm last week re-iterated its plan to ship three new Treos this year in addition to the already-available 700w, though it's provided no further details about specifications or target markets. Hollywood and Lowrider were first discussed by Caris & Co. analyst Susan Kalla in November 2005, the former as a multimedia-friendly phone, the latter as a low-end model aimed at mainstream consumers. Hollywood is also thought to be a 3G model.

The other model is believed to be the 700p - a Palm OS-based version of the 700w. ®