Complex sentence: The project was officially unveiled at the Telefe Upfront, "Todos Juntos 2013", at the end of May, where Cris made her first official appearance in years and received a tribute due to her contribution to the channel.
Split into simpler sentences: The project was officially unveiled at the Telefe Upfront, "Todos Juntos 2013", at the end of May. During the show, Cris made her first official appearance in years and received a tribute due to her contribution to the channel.