It's Steve Jobs's plan to make this the Week of the Tiger. But Bill Gates and his minions at Microsoft are crying bull—specifically, a Longhorn steer. Despite the zoological bent, this dust-up is not about animals, but operating systems; Apple and Microsoft just happen to have named each of their major system upgrades after beasts of the realm. This Monday, Bill shows off the future of Windows, a.k.a. Longhorn, at a developers' conference. The oohs and aahs may be tempered by the fact that the hundreds of millions of Windows users won't get their hands on it until holiday season,...