One of the major enhancements within the 2011 release are demonstrated through the connection to AEC related products like Civil3D, Revit Architecture, 3DsMax, Ecotect & Map3D. So this is a first step to combine products to reflect workflows that will represent the full life cycle of infrastructure projects.
Imagine you create a new site plan in Map3D – export it to LandXplorer and raise the buildings to illustrate how it might look like – change heights or enter new buildings – export it to Ecotect to run some sun (or other) analyzes – bring some analyzed blocks into 3DsMax to detail it out – or include some architecture models to replace the block buildings - add given Civil3D content to add the new transportation segment of the new site to your city model
For the LandXplorer – Ecotect worklow see here.
The list I want to provide here gives you an overview on the in and export formats within the LandXplorer products.
Have fun in creating workflows and send in some nice examples or improvements you have in mind.