I hope the result is to broaden distribution of SodaStream refill canisters, and lower the price due to economies of scale. I'm not holding my breath though.
I've never tried soda flavor packets, but I enjoy carbonating fruit-infused water (watermelon and strawberry are great) and white wine (for cheap but surprisingly good "champagne"). Just be sure not to fill the liquid all the way to the line when using anything other than water!