As Orion and Ares progress towards PDR (Preliminary Design Review) and the next phase of development cycles (DACs), the Altair Project is beginning to seriously study potential configurations for the lunar lander.
While still a long way off a final design, the project is working on its alignment with the ongoing changes to the capabilities of its launch vehicle - Ares V - while using lessons learned with Orion in a "smart buyer" design approach.