See http://www.boost.org/users/history/ for changes.

I found no dependencies on the old installed shared libraries in /usr. There
my be dependencies from /project or /home however. If someone complains,
we might need to add a compatibility package.

There already are broken dependencies on even older boost libraries:

  MISS libboost_program_options.so.1.45.0 /usr/bin/akonadi_agent_launcher
  MISS libboost_program_options.so.1.45.0 /usr/bin/akonadi_agent_server
  MISS libboost_program_options.so.1.45.0 /usr/bin/akonadi_control
  MISS libboost_program_options.so.1.45.0 /usr/bin/akonadictl
  MISS libboost_program_options.so.1.45.0 /usr/bin/akonadiserver
  MISS libboost_regex.so.1.57.0 /usr/lib/libsource-highlight.so.4.0.1

but with replacing 1.59 by 1.63 we won't make thinks worse.