Well I do not know the specifics, but the roadmap is already set:

http://www.jollausers.com/2015/01/se...like-for-2015/

I would guess the usb tethering and private browsing support should come in release 12...
Not sure about the rest. Maybe landscape maps? OpenVPN support?

Toolchain update is scheduled for release 13, which may or may not be sailfish 2.0.

Anyway, between now and June, we should get a nice set of improvements. Maybe they will come as a massive upgrade, or they may come piecewise.