Pan-European entertainment giant RTL Group has launched a second channel in Luxembourg.Den 2. RTL is aimed at young adults, allowing existing web RTL Tele Letzebuerg to concentrate on news and information, the group said. The two will share programming between 6 and 8 p.m. Den 2. RTL’s daytime sked will consist of shopping formats, news and RTL Radio Web TV. Both channels air in the local Luxembourgian language. RTL Tele Letzebuerg topper Alain Berwick will also head Den 2. RTL, which launched Monday.