Sun announces the release of the second edition of Core J2EE Patterns.

6 new patterns are described in addition to the complete rework of the 15 existing patterns of the first edition:

PresentationTier

– Context Object

– Application Controller

Business Tier
– Application Service
– Business Object

Integration Tier
– Domain Store
– Web Service Broker

Their announcement page has some more in-depth information. The link leads you directly to your amazon order.