chk071 wrote:For sale? I didn't know ZynAddSubFx will go commercial.

The rewritten UI is basically the commercial component (for a limited period of time before it is eventually open sourced under either MIT or GPL). In order to complete the interface rewrite a few months of full time work were needed. Right now the vast majority of that work has been completed and the final bug fixing is being done part time. The core synthesis engine of ZynAddSubFX will continue to be GPLv2+.
While the rewritten UI is in binary-only form, the old UI/free version (from the official project (so OSX/linux)) will continue to be supported and releases for those platforms will continue.
chk071 wrote:Is your poll about the most used OS's meant serious?
It's more of a poll of the current user base.
I have download statistics and traffic statistics for a few spots, but that doesn't really show the full picture.
The survey showed 65% used it on linux, 15% on osx, and 48% on windows (people could select multiple platforms).
If this was a standard commercial project then I'd expect a different distribution as you said, but I don't see the sale of an optional add-on (the replacement UI) as a full commercialization.
I'd say to think of this as more of an alternative to up-front kickstarter-like funding for a project rather than a fundamental change in direction