According to an article on the US Autoblog website the next Audi A3 will debut in production form at the 2013 Geneva Motor Show. Audi has released 3 'renderings' show the new car - more like concept drawings than true renderings.
This is the site : Audi previews next-generation A3 hatchback — Autoblog
This is the site : Audi previews next-generation A3 hatchback — Autoblog