They showed a unique LED linear module for direct/indirect lighting. Looks like an edge-lit glass arrangement with the LEDs running along the perimeter.
Tridonic also was one of the many manufacturers showcasing planar modules for fixtures with flat luminous surfaces. Tridonics is called the TALEXXengine STARK QLE and is even available with a distinct circuit of LEDs dedicated to emergency lighting.
Finally, Tridonic also launched a series of OLED modules with an interesting mounting and circuiting design under the LUREON and LUCEOS product names.