i Use Multi Seat's so i'm going to like this
Multi-seat improvements with configuration support through udev properties
1.) There is no KDE 4.
2.) No 4.x release of Software Compilation will be based on Qt 5.
3.) SC 4.11 is the last release featuring Plasma Workspaces components, including KWin.
4.) The Workspaces parts of SC 4.11 will be supported for 2 years, maybe longer.
5.) Plasma Workspaces 2 will feature KWin 5.0.
6.) KWin 5.0 will be the first KWin release fully supporting Wayland.
7.) PW2 will be released sometime in 2014 but probably not as early as January or February.
8.) Read Planet KDE to get correct news and you won't misunderstand it all any longer.
FirefoxOS is HTML5 only, however since the Mozilla Marketplace is cross platform it will probably have more success than other HTML5 platforms such as Tizen.
Tizen also suffers from an unclear development path and lack of official support for any native applications as EFL is no longer a supported framework.