To date, most other phone manufacturers have either already launched their dual-core smartphones or have at least one in the works. Sony Ericsson is not going to be left behind–that is, if the leaked photos of the Sony Xperia duo are to be believed.

Late last week, phoneArena uncovered photos alleged to be those of the rumored Sony Ericsson Xperia duo. The “duo” in the name supposedly hints at the dual-core processor that the handset will be having. If true, the Sony Ericsson Xperia duo will be the first Sony Ericsson Android smartphone to bear a dual-core processor.

The first photo shows the front of the Sony Ericsson duo. The display is noticeably edge-to-edge on the sides, which means that the Xperia duo’s screen may be somewhat larger than that of the Sony Ericsson Xperia arc’s screen (4.2 inches).

The photo also shows navigational buttons arranged on a chromed bar. The familiar navigation bar has become sort of a signature for Sony Ericsson’s Xperia family of handsets.

The second photo allegedly is a snapshot of a promotional ad or poster showing the Xperia arc to the left of the Xperia duo. The Xperia duo on the photo is slightly wider and taller than the Xperia arc, which somehow confirms suspicions that the screen size of the Xperia duo may be bigger than the Xperia arc’s–probably around 4.5 inches.

Rumors say that, if indeed the Sony Ericsson Xperia duo is a dual-core handset, it will have Qualcomm’s dual-core Snapdragon processor, since both Sony Ericsson and Qualcomm have been partners for the single-core Android smartphones that Sony Ericsson has launched earlier this year. Details about its release date remain speculative, at best, with the earliest release date said to be during the fourth quarter.

However, we are relatively certain that the Sony Ericsson Xperia duo will have Facebook integrated and will have a Near Field Communication (NFC) chip.

Further details about the Xperia duo’s specs are still vague, but we can probably expect Sony Ericsson to reveal something juicy at a Singapore expo this week.

Image credit: phoneArena