Wonderful news guys, another new episode has been revealed! It's called," Back To The Past" and it will air Feburary 15th at 8:30 PM. Here is a clip of it :
http://kids.yahoo.com/movies/videos/video/17823900
I guess it's a 30 Minute special, but i'm not 100% sure. That was the only clip i could find for it right now.
It seems that it is about Spongebob and Patrick going back in time, and they alter the present causing Manray to be the ruler or something like that.
It sounds awesome. I hope we get more info soon.