SBCL 1.0.12 has been released.

It is in CVS and on the File Releases webpage at SourceForge now; enjoy.

>From the NEWS file in the distribution:
changes in sbcl-1.0.12 relative to sbcl-1.0.11:
  * new feature: MAKE-HASH-TABLE now experimentally accepts a
    :SYNCHRONIZED argument, which makes the hash-table safe for
    concurrent accesses (but not iteration.) See also:
    SB-EXT:WITH-LOCKED-HASH-TABLE, and
    SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
  * optimization: CONCATENATE on strings is an order of magnitue faster
    in code compiled with (> SPEED SPACE).
  * optimization: SUBSEQ is ~50% faster on lists.
  * bug fix: bug 417 fixed -- source location reporting is now more robust.
  * bug fix: SUBSEQ on a list will now correctly signal an error if if
    END is smaller then START.
  * bug fix: SB-PROFILE will no longer report extra consing for nested
    calls to profiled functions.
  * bug fix: ROOM implementation had bogus fixnum declarations which
    could cause type-errors when calling ROOM on large images.
  * bug fix: if file compilation is aborted, the partial fasl is now
    deleted, and COMPILE-FILE returns NIL as the primary value.
  * bug fix: number of thread safety issues relating to SBCL's internal
    hash-table usage have been fixed.
  * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
    be returned from its body when the values were being returned
    using unknown-values return convection and the W-P-O was wrapped
    inside an UNWIND-PROTECT.
  * bug fix: sb-posix should now compile again under Windows, enabling
    slime to work again.