The Sparc International supporters club for the Sun Microsystems RISC has been keeping its cards close to its chest over its announcements for tomorrow, but it is expected to reveal its Open Environment II, consisting of the now solidified Applications Binary Interface for the Sparc processor in conjunction with AT&T’s Unix System V.4. ICL has handed back the source of its reference port of V.4 for the Sparc to AT&T for administration, and other vendors, including Sun, will be using the reference as the basis for their own System V.4 offerings. Sun is expected to reveal migration tools and guides to help move applications over from SunOS to V.4, bringing over the 1,400 or so Sparc applications in line with the new Interface, and making them available to other Sparc licensees. Meanwhile the European Sparc Group is holding its second meeting at the end of the month, with 32 members expected.