v3.6.0 for N9/N950 is available here.

Changes:
- Button to reset map rotation
- Possibility to set coordinate for the landmark to be added
- Possibility to update landmark info
- Landmark categories (very limited functionality)
- SMS GPS source for TK-102 and other devices with same protocol(not sure whether this works)
- Bug fixes

For installation see this post.

Usage instructions:

Adding landmark:
1. Click somewhere on the map area so that box pops up at top of the screen
2. Click house icon on the right side of that box, it'll open menu for adding landmark
3. Tap on the "Coordinate" text to switch between format that coordinates are shown (projected coordinates, lat/lon decimal format, lat/lon degrees/minutes/seconds)
4. Tap on coordinate to set its value
5. Set name and description and click icon at the bottom right corner

Updating landmark:
Otherwise same as adding landmark but in first step select the landmark you want to update

Landmark categories:
Press and hold landmark icon (house icon) on the left menu to open landmark category settings. Selected category is shown below "Category" text (default is "Mapsi Landmarks"). All the landmarks you add are added to this selected category and also only landmarks from this category are shown on the map.

SMS GPS source (TK-102):
1. Press and hold GPS icon on the left menu.
2. Select "GPS sources" -> "Add GPS source"
3. Select "SMS" type and set name and phone number (of your TK-102 device)
4. Click "Add source"
5. Select that added GPS source from the list and set its "State" to "Enabled"
6. Now when you receive SMS from TK-102 it should be shown on the map
If someone tries this let me know whether it works.