Office 2001 will remain available for people still running Mac OS 8 and 9, but Microsoft will be releasing only bug fixes (not updates) for that version. With its superior integration into the OS X environment, nicely reworked Entourage X, and improved overall performance, Office v. X is far more than a mere port of Office to OS X. ), provides the mainstream productivity programs Mac users have been waiting for. X, the eagerly awaited upgrade to Office 2001 (4.0 mice. The trickle of applications rewritten for Mac OS X is turning into a flood, and Microsoft Office v.