Teensyduino 1.42 has been released.

https://www.pjrc.com/teensy/td_download.html

No significant changes were made since 1.42-beta8.

I wrote a detailed article about what's new in 1.42, even with a video about the USB touchscreen stuff.

https://www.pjrc.com/teensyduino-1-42-whats-new/