Forkosigan wrote in the German forum:
https://www.mobileread.com/forums/sho...12#post1516812
that there is a ALPHA version of the FW 2.1.0 available (it links to a CIS version so not quite sure what the implications of this are). But the list of inventions sounds excellent.
Handwritten notes in FBreader (adobe will follow)
improved bluetooth connectivity: support of bluetooth keyboard ...