LG might be launching the LG Optimus G Pro soon. According to Android Central, it might have a 5.5-inch screen with full HD resolution. Based on a picture (banner) from LG Korea, it seems that the LG Optimus G Pro fits the leaked picture of the device.
However, do not get mixed up with the Optimus G Pro that was launched in Japan recently. I am not sure why they used the same name for (maybe) a different size model. From the picture above, it shows 10:30am and a 20th Feb date? If it is true, you might hear it soon before Mobile World Congress (MWC).
And here is the leaked picture. It sure looks a lot like the Samsung GALAXY Note.