We have published version 0.2 of the Fletch SDK on our download page.
Our major focus has been to improve the getting started experience. Concretely this release includes:
A new getting started script that automates the creation of the Raspberry Pi 2 SD card
Network discovery support making it easier to run fletch programs on Raspberry Pi 2 devices connected over the network
API documentation (included in the SDK download in the docs folder)
Many smaller fixes