Complex sentence: In August 2014, A + E took a 10% stake in Vice Media for $250 million, then announced in April 2015 that H2 would be rebrand into the Vice channel with an indicated early 2016 launch.
Split into simpler sentences: In August 2014, A + E took a 10% stake in Vice Media for $250 million. The company then announced in April 2015 that H2 would be rebrand into the Vice channel with an indicated early 2016 launch.