You might have heard that Corona SDK is shifting to open-source software.
We are very excited about this development and will be continuing to support Corona for the foreseeable future.

There will be an update to our Corona books after the shift to open-source is completed to discuss the new methods of installation and building your applications.
Remember, all updates for our eBooks are free! So don’t wait to purchase your copy! https://burtonsmediagroup.com/books/coronasdk/