OK, it took a bit longer than expected, but version 0.14-1 is here with turn-by-turn navigation and espeek voice directions !

How to use it ?

• get a route
• go to route -> current route -> tools (or through a button on the map screen for point2point routing)
• click the "start navigation" button
• select the starting point (first/closest)
• follow the directions and watch for cliffs, cars, bears, missing bridges, etc.

How does it work ?
The direction messages are displayed on the screen and also spoken by espeak.

For each point, you get two voice messages, for example:

• "in 250 meters, turn right to XY street" - some distance before the point
• "turn right to XY street" - after reaching the point

To "reach" a point, you have to get to certain distance from it (by default 30 meters, but this distance can be configured in options->navigation). After "reaching" a point, the navigation switches to the next point, until the last point is "reached".

The point corresponding to the current message is indicated by a red circle + current distance is shown.

So thats it, its quite simple but seems to work OK.

If you have any idea how to improve this, let me know.