On-screen input
Input-pad is a tool to input symbols and other characters hard to type with a keyboard.
eekboard is new virtual keyboard, which supports X keyboard layout switching.
The new ibus-handwrite package supports on-screen input of Chinese hanzi and Japanese kanji characters.
Input methods
Users of input-methods upgrading from earlier versions of Fedora may need to install GTK3 versions of their GTK immodules, like ibus-gtk3, in order for input-methods to continue working normally on their desktop.
im-chooser (via imsettings) now allows to fully disable input-methods for users that do not need XIM for X locale compose support: so Unicode input with Control+Shift+u works again in GTK applications by default when not using input-methods like ibus.
Fonts
Chinese
For Simplified Chinese, the default desktop font is WenQuanYi ZenHei; for Traditional Chinese, the default desktop font is UMing.
For WenQuanYi ZenHei, a simple tool zenheiset has been introduced, which allows changing its rendering between the default anti-aliased outline and bitmap rendering.