In a nutshell, the original wording of the ACE+TAO+CIAO license was
overly verbose, redundant, and unclear - due largely to the fact that
I'm not a lawyer (nor do I play one on TV ;-)). The latest version of
the license has excised the verbosity/redundancy and is also (hopefully)
more clear. The substance of the license itself hasn't changed, i.e.,
it is still a "BSD-inspired" open-source license that doesn't restrict
use of the software.