This official RuneScape update is copyrighted by Jagex. It is a direct quote from the RuneScape website. This update dates to:
5 March 2009
Adventurers rush to chop down an evil tree in our latest wallpaper. If you have been enjoying the newest distraction and diversion, why not set it as your background?
The evil tree wallpaper is available from the Downloads & Wallpapers section of the website.