The new particle effects include a little cloud of dust when the ball bounces, a little trail of dust when the ball rolls, and little water droplets and ripples when it hits water. We are still working on adding little specs of dust that float in the wind, and leaves that fall from trees. These will hopefully be both aesthetically pleasing as well as a handy indicator for players as to the winds strength and direction. All of these effects are fairly subtle, but combined will hopefully make for a much more detailed and polished experience.
We've also added/reworked more levels, bringing the current total up to 20. We will be adding more levels to the next update, in order to give a wider variety of course types. We are considering adding the level editor shortly as well, however it is not completely user friendly yet, so we may still hold off on this for a bit. We've also tossed around the idea of creating some kind of competition when the editor is released, in which the top user created map gets to be featured in the full version of the game.
Here's a shot of our newest level, in which the standard golf style hole has been turned into a hoop that the ball must pass though!