Complex sentence: Traditionally chocolate in flavor, a new strawberry milkshake flavored variant became available in 2006, soon after they also released Reese's Peanut Butter Cups flavored Whoppers (discontinued sometime 2014 to 2015).
Split into simpler sentences: Traditionally chocolate in flavor, a new strawberry milkshake flavored variant became available in 2006. Soon after they also released Reese's Peanut Butter Cups flavored Whoppers (discontinued sometime 2014 to 2015).