Amdahl Corp promises a major new release, 2.0, of its UTS/580 implementation of Unix System V for this summer. UTS/580 runs native on the IBM-compatible mainframes, and the new release will support a string of low-cost, high-performance communications controllers, supporting SNA, X25, Ethernet and TCP/IP. It will be Posix-compatible and Amdahl claims that on the 580, it will offer better price-performance than competing minicomputers under Unix.