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.
[Voted into WP at August, 2010 meeting.]
According to 13.9.4 [temp.expl.spec] paragraph 1, only non-deleted function templates may be explicitly specialized. There doesn't appear to be a compelling need for this restriction, however, and it could be useful to forbid use of implicitly-instantiated specializations while still allowing use of explicitly-specialized versions.
Proposed resolution (February, 2010):
Change 13.9.4 [temp.expl.spec] paragraph 1 as follows:
An explicit specialization of any of the following:
non-deletedmember function of a class template
static data member of a class template
member class of a class template
member class template of a class or class template
non-deletedmember function template of a class or class template
can be declared...