This is a welcome development

Travelocity launches new trip planning tool and one that goes in the right direction, away from the now pretty much standard template of asking people where they want to fly and when and take it from there.

Multi-destination and component research and planning is a logical next step to dynamic packaging that deserves the term.
To make the user experience a better one the tight integration of information sources and combination of mashups has to happen. This is certainly a welcome effort.