Google has announced the addition of showing a new currency for publishers based in France, Germany, Italy, the Netherlands, and Spain. So now, AdSense reports support both the US Dollar and now the Euro.
Why the recent change? Well, besides for it being a very popular request (not just Euros but other currencies), AdSense publishers based in those countries have been very upset with the exchange rate Google uses this. Google said this will allow "earnings converted daily, you'll avoid the risk of currency exchange fluctuations between USD and the Euro." To change currencies, you need to agree to new set of Terms and Conditions, which are explained in Google's post.
Overall, many publishers are really happy that Google added this option. Many others want the currencies to be expanded to more options outside of just the US Dollar and the Euro.