Signage for next week’s 2009 Worldwide Developers Conference has begun to appear both inside and outside Moscone West in San Francisco, with much of the early decorations focusing on iPhone and iPod touch applications. Adam Jackson has posted a brief Flickr look at the signage, which is still in the process of being installed. Notably, a long, large banner inside the venue is covered with app icons, strewn about in no particular arrangement with the text “One year later. Light-years ahead.” joining the typical WWDC lettering. Smaller window-mounted icons can be seen on the perimeter wall facing the street, and the large Apple logo is mid-way through installation in its usual spot above the main entrance. Apple’s WWDC 2009 event kicks off next Monday with a Keynote Address from senior vice president of Worldwide Product Marketing Phil Schiller and a team of other Apple executives at 10:00 a.m Pacific Time.