In the Amazon, they have listed the bundle, that includes a PlayStation 4 and also a PS Vita slim.
After a lot of search, it seems that it will be available around July 4 in France. The price tagged to it currently is $789.99. It appears to be a little bit expensive but we have to remember that this is only the translated price from the European market for the consoles. So if one calculates the rate of PS4 in Europe that costs $544.83 and the Vita stands for a $245.16, then it is the same for you to buy, if you would have gone them buying each of them.