Now on the Market is version 1.3.1
The graphics have now been optimised for both small screen phones like the HTC Wild Fire and large screen phones like the Nexus One.
There is now has an improved help and includes a short guide to using the app featuring Android. Select App Help then more help to see the guide.
A couple of fixes in the Map line between you and your destination is now smaller but still clear to see and moves as you move.