Interleaf Inc, Cambridge, Massachusetts, is promising mainframe and personal computer versions of its computer-aided publishing software for later this year: the software currently runs on 32-bit engineering workstations, and Interleaf says the mainframe version will be out on the fourth quarter, while text-editing and read-only software for personal computers will arrive in the third quarter, and the existing software will be enhanced to work with the mainframe version; no indications of prices were given.