Is there a schedule which defines the next steps in firmware implementation?
I made first steps to work with LoPy and save the examples at https://github.com/ckuehnel/pycom.
But now I am looking for timer, interrupts bluetooth etc.
The highest priority is fixing the existing issues: https://github.com/pycom/pycom-micropython/issues
There's no detailed public roadmap yet, but there are weekly announcements that explain what should be expected in the next release. Here's an example: https://forum.pycom.io/topic/340/week-commencing-28th-nov-update