Final Tool Version from objectteams.org:

Object Teams provides ...

State-of-the-art in programming languages

roles, collaborations, aspects and more

Full-featured development environment

tightly integrated with Eclipse/JDT

Flexible components with OT/Equinox

write OSGi bundles / Eclipse plug-ins with Object Teams

Object Teams has become the Eclipse Object Teams Project.

Please read here for background, rationale, benefits and impact of this move.