Rudranarayan Mukherjee, NASA JPL gave an update on progress to Robotic Assembly of Space Assets: Architectures and Technologies. This is the path to making 100 meter and even multi-kilometer diameter space telescopes and starshades in space.
The presentation was at the Future In-Space Operations (FISO) Working Group Presentations at the FISO telecon.
They are able to assemble 3-meter truss modules in the lab with robotic systems in 26 minutes
They have looked at sending robotic assembly systems to the space station and to have modular telescopes built in space.