These FOSS packages were removed from the #OracleSolaris package repository in the 11.4.63 SRU:
aalib
Caribou
libxklavier
libmusicbrainz
libsass and sassc
wxWidgets 3.0
Python py
Python extras
pidgin, pidgin-otr, libotr and pidgin-gnome-keyring
gtkspell
New additions to the EOF list for future 11.4 SRU's are:
gnu-gs-fonts-std
gnu-gs-fonts-other
Python boto
Yasm
The full list can always be found at
https://www.oracle.com/solaris/technologies/end-of-feature-notices-solaris11.html