This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 112e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
An abstract class is permitted to be a final class. Such classes are very nearly useless and should probably be made ill-formed.
Rationale (February, 2012):
Such classes could be used for static members and for access control. CWG saw no need to prohibit them.