In an official statement, Orange publicized new offers that allow access to Internet network anywhere within the European Union. These subscriptions give access to 2 MB of data per day for 2 Euros. The iPhone in France has a supplement of 10 MB for 5 euros, which is just acceptable to do a strict minimum, namely to download emails without the attachments and to localise oneself from time to time. There is still an long way to go with the roaming market that some regard as ultra profitable for the operators. More on their offers of roaming and not to receive an invoice that will put you in debt for some generations:
http://animation.orange.fr/_roaming2009/index.php