In communications, for example, though little additional long-haul fiber is needed at this point, there is probably scope for investment in the sophisticated equipment that transmits signals over the fiber, in the "last mile" of fiber network to customers' doorsteps, and in new wireless technologies and their applications.
This is especially true for internationally-active banking groups, irrespective of the approach they are planning to implement. However, one should keep in mind that the Basel II framework is effectively accelerating a process that had or should have started earlier and would be necessary even if the new framework had not been introduced.