Developers still expect to build trade center tower.(World Trade Center South, Boston, MA)(Brief Article)

Unless something unusual turns up, plans for building World Trade Center South, a mixed office-retail development, will take shape by early summer, and formal plans will be submitted later this year.

The project, which is still in the planning stages, is being developed by the Drew Co. of Boston and Pembroke Real Estate, Fidelity Investments' Boston-based real estate development arm. The team has already built the Seaport Hotel, which opened in 1998, World Trade Center East, an office tower that opened last year, and is currently building World Trade Center West, an office tower that will open next year.

World Trade Center South would be roughly the same size …