I'm happy to announce the TurtleBot3 is coming.
We officially announced it at ROSCon in collaboration with ROBOTIS. The talk will be posted online with the rest of the ROSCon talks once the videos have been rendered properly.
In the mean time Evan Ackerman was at ROSCon and wrote about the TurtleBot3 in IEEE Spectrum here
It's going to be much smaller, less expensive, able to do SLAM,
and support many different configurations.
Here's a photo of prototypes of several configurations shown in the rendering above: