Read this and answer the question. If the question is unanswerable, say "unanswerable".

In October 2014, Beyoncé signed a deal to launch an activewear line of clothing with British fashion retailer Topshop. The 50-50 venture is called Parkwood Topshop Athletic Ltd and is scheduled to launch its first dance, fitness and sports ranges in autumn 2015. The line will launch in April 2016.

Beyonce and Topshops first products were to be sold in stores when?
autumn 2015