Apple Discontinues Powerbeats, Beats Solo Pro, and Beats EP

Following the launch of the Beats Fit Pro this morning, Apple has discontinued several older Beats headphones options, including the $150 Powerbeats, the $250 Beats Solo Pro, and the $130 Beats EP on-ear headphones.
These Beats headphone options were listed on Apple's online store as of yesterday, but today, attempting to visit one of the links for the products brings up a warning that the accessories are no longer available for purchase.
Twitter users noticed the absence of the Beats headphones