Received this email from Sonos about 20 minutes ago:
"Today we say, “goodbye” to the CR100 – our first controller. Due to its aging technology, the CR100 will no longer connect to your Sonos as of April 2018.
We know the CR100 has been an important part of your Sonos experience. Even as we shifted to the Sonos app in 2009 - bringing music control to the smartphones we carry with us all the time - the CR100 has lived on as a coveted dedicated controller. But today, the CR100 can no longer support many of the services and functions that are core to the Sonos experience.
More importantly, the controller’s hardware has reached the end of its lifespan.
The CR100 is a unique Sonos product, powered by an internal lithium ion battery. Across devices and industries, aging lithium ion batteries have the potential to overheat when left charging. For this reason, we can no longer continue to support the CR100, even in a limited way.
What does that mean?
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Disconnect your CR100 from its charger, unplug the cradle, and safely and responsibly recycle both components. Drop them off at your local e-waste center, or we can help you dispose of your unit at no cost, just fill out this form.
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As of early April, your CR100 controller will no longer connect to your Sonos system.
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We'd like to show our appreciation for your loyalty with a coupon for $100 off of your next sonos.com purchase.
In the meantime, check out our step-by-step guide to installing the Sonos app on your phone, tablet or computer. The guide includes instructions on how to turn a device into a dedicated Sonos controller without the distractions of other applications. If you’d prefer to talk with our customer care experts, please don't hesitate to reach out.
Thank you for being a loyal Sonos customer and for sharing your love of music with your friends and family."