Complex sentence: After months of speculation, Prudence finally announced in January of 2008 that she would be holding concerts in April of that year, as well, she will be releasing a compilation greatest hits album to accompany the concert.
Split into simpler sentences: After months of speculation, Prudence finally announced in January of 2008 that she would be holding concerts in April of that year. Also, she will be releasing a compilation greatest hits album to accompany the concert.