Teensyduino 1.15 has been officially released.
http://www.pjrc.com/teensy/td_download.html
For a detailed list of all the changes since 1.14, scroll down to "Teensyduino Revision History".
http://www.pjrc.com/teensy/td_download.html
For a detailed list of all the changes since 1.14, scroll down to "Teensyduino Revision History".