From the press release:

All 105 Apple retail stores will host “Tiger World Premiere” events from 6:00 p.m. to midnight offering workshops and hands-on demonstrations of Tiger’s hottest features, plus giveaways at every store including a chance to win a PowerBook G4, iPod and more.

“Starting tomorrow night, features like Spotlight and Dashboard will change the way millions of people use their computers,” said Philip Schiller, Apple’s senior vice president of Worldwide Product Marketing. “Our competitors will be trying to copy Tiger’s more than 200 new features and innovations for years to come.”

Tiger delivers more than 200 new features and innovations including Spotlight™, a revolutionary desktop search technology that lets users instantly find anything stored on their Mac®, including documents, emails, contacts and images; and Dashboard, a new way to instantly access important information like weather forecasts and stock quotes, using a dazzling new class of applications called widgets.

Apple will also release Mac OS X Server version 10.4 “Tiger” at the same time. Based on the same core technology as the desktop operating system, Tiger Server integrates over 100 leading open source projects and standards-based applications with easy-to-use management tools that make it easy to deploy for Mac, Windows and Linux clients.

Pricing & Availability Mac OS X version 10.4 “Tiger” will be available on April 29 beginning at 6:00 p.m. at Apple’s retail stores and through Apple Authorized Resellers for a suggested retail price of $129 (US) for a single user license. The Mac OS X Tiger Family Pack is a single-residence, five-user license that will be available for a suggested retail price of $199 (US). Volume and maintenance pricing is available from Apple.

Mac OS X Server version 10.4 “Tiger” will be available on April 29 at Apple’s retail stores and through Apple Authorized Resellers for a suggested retail price of $499 (US) for a 10-client edition and $999 (US) for an unlimited-client edition. Current subscribers to the Apple Maintenance Program will receive Tiger Server as part of their service agreement. Volume and maintenance pricing is available from Apple.

The standard Mac OS Up-To-Date upgrade package is available to all customers who purchase a qualifying new Mac system from Apple or an Apple Authorized Reseller on or after April 12  for a shipping and handling fee of $9.95 (US). Tiger requires a minimum of 256MB of memory and is designed to run on any Macintosh® computer with a PowerPC G5, G4, or G3 processor and built-in FireWire.