iPad models sporting a resolution of 2048 x 1536 have been spotted in the server logs of a notable website. Ars Technica reports that while doing research for its monthly browser that report, it found multiple hits from devices reported to be running iOS 6, with a newer build of WebKit—535.8—than the current version, which is listed as 534.46. In addition, it found 346 visits from a device with a screen resolution of 2048 x 1536, widely…