Yep, here's the release:

Aer Lingus and LanChile begin to offer the full range of oneworld(TM) customer services and benefits on Thursday, June 1.

They take the full membership of oneworld up to eight -- almost doubling its original line-up in the little more than a year since its launch in February 1999. This represents one of the most rapid growth rates among global airline alliances.
http://biz.yahoo.com/prnews/000531/tx_oneworl.html