For the last five years or so over on the Malazanempire forum, various fans have been coming up with ideas for a complete world map. Whilst maps of the individual continents and sometimes individual kingdoms and cities appear in the novels, a grand overview map linking everything together has not appeared so far. At one time Erikson indicated an Encyclopedia Malazaica, complete with finely-detailed maps, would follow the completion of The Crippled God, but more recently has indicated this project is now on the back-burner and would only appear - if at all - much later, possibly after Esslemont has completed his books (the latter two of which will take place on continents as yet unvisited in detail in the books, namely Assail and Jacuruku).
For this reason the fan maps keep a-comin'. This is the latest version of my map, updated with information from Stonewielder and The Crippled God, not to mention with the help of a rough map released by the Malazanempire admins based on a very rough drawing by Erikson himself.
The shape of the continents should now broadly be correct and the placements more or less accurate, though Erikson and Esslemont's own maps are prone to a lot of changes, so don't be surprised if additional information in forthcoming books invalidates anything you see here.