Don't think so, Nokia seems to have AD/HD about old models. Sygic is indeed available, but 70€ seems a bit steep for something I expected to become free at some point.
Read somewhere that the guy in charge of SW development at Nokia has stated we could get it one day - but only if the QT version they are doing for Meego can be compiled for Maemo without massive amounts of re-work. So there is a small chance.