SCO Tuning for Services, Ports Tarantella

According to a story on Sm@rt reseller, SCO is tuning now to be a service company (not just to Linux but to AIX and other unices), and they are porting (this is unofficial and not confirmed) Tarantella to Linux. Can anyone post details about Tarantella? What is it? How is it compared to Citrix's Metaframe?