As Issie said in the link
we thought of changing the banner too.
We have many talented and creative minds here and a couple of wonderful new Arwen scenes so let's fill the spot's appearience with beautiful Arwen love :D
I named it "temporarily" banner change because I'm so in love with the curent banner that I'd like to have it back some time again.
In two weeks or more I'll make a pick where you may chose the new banner.