It looks like 500k in Europe is pretty accurate estimate. This is just beginning. It means nothing if PS3 will not keep this positive pace. I have my fingers crossed.
I honestly think that 500k is a little bit low (estimation, I don't doubt that they could have hit 600k). But of course that depends of how well it sells in Germany and France. Sweden seems to have sold around 10k at least and we are only 9 million people here.