I guess it’s just a mistake in internetnews.com’s article Borland Works To Evolve Java but it seems to imply that Borland owns JBoss. According to this article:
As Paolini explained, the JBuilder X product boasts advanced Web application development support that includes a standards-based visual designer for the Apache Struts framework, as well as comprehensive support for Borland’s popular open source application server, JBoss.
Even if it’s not true, this is good advertisement for JBoss.