
It will probably go through a longer beta (testing) phase, before it will be published. The Inkscape 0.92.x series will presumably be continued, and receive bug fixes, for still quite some time, even after 1.0 has been released. This is because 1.0 will introduce some major changes that might cause new issues that need to be solved.
Inkscape developers will be working towards this goal during the next hackfest (which is going to be in Kiel in September).
Aside from CMYK support (which is a much too comprehensive task to be done in the foreseeable future), what is the one thing you would you like to see fixed or added in Inkscape 1.0?