When the EU region was announced[1] last month they weren't Safe Harbor compliant (yet). Has that changed?
[1] https://blog.heroku.com/archives/2013/4/24/europe-region (near the bottom).
[1] https://blog.heroku.com/archives/2013/4/24/europe-region (near the bottom).
They are still not compliant with Safe Harbor in the US. Anyway since our company is located in France, the french privacy law allow us to use a hosting located in EU (instead of a US SafeHarbor one). Heroku did the EU launch just for this.