A more recent rumor (a few hours old) says Samsung Electronics is going to announce a 5 inch device dubbed GALAXY Grand with LTE support by the end of the month. We know that Samsung has plans to debute a 5 inch 1080p (Full HD) device early next year, however this is not it according to its rumored specs sheet.
Although it is a 5 inch behemoth according to Money Today publication this device will only sport an LCD WVGA display (instead of Super AMOLED HD) with a 800 x 480 pixels resolution. It will also packs a quad-core chipset clocked at 1.4GHz similar to what we see on the GALAXY S3, 2100 mAh battery capacity, LTE included and Android 4.2 JellyBean OS.
Samsung GALAXY Grand similar in looks as GALAXY S III only slightly bigger is going to all three major carriers in Korea as SHV-E270S (SK Telecom); SHV-E270T (KT Telecom) and SHV-E270L (LG U+) for 800,000 won (about $740 USD).