Nokia may be poised to unveil at least two new Windows Phone 7.5 (Mango) devices during its Nokia World conference next week. Pocketnow spilled an image of the Nokia “Sabre” on Thursday, which reportedly packs a 1.4GHz processor, a 3.5-inch WVGA display, a 5-megapixel camera and 1GB of storage. Microsoft CEO Steve Ballmer said we can expect to see “a bunch” of Windows Phone handsets from Nokia during Nokia World, which kicks off on October 26th. We have already published plenty of purported details on the Nokia 800, also known as the Sea Ray, but perhaps Nokia still has a few surprises up its sleeve. The good news is we have just under a week until Nokia makes it all official.