After watching the trailer, I am struck by a couple of things. First, Liam Neeson's depiction of Zeus exudes far more power than the Olivier version. Second, though the film seems to lack any claymation (which would be a nice homage to Harryhausen), the film is definitely showing Harryhausen's influence on special effects. They kept the Medusa design and the giant scorpions look straight out of a Harryhausen film. Third, it looks awesome. Fourth, like the original it seems to have thrown a lot of Greek mythology out the window.
Fifth, I cannot wait until March 26th.