Nexus 4 available at 5:00 pm in Germany and UK
Looks like the rest of Europe should follow suit pretty soon.
EDIT 1: It'll be available in the UK today, too.
EDIT 17:10 CET: Aaaand it's gone. Both models are shipping in 4–5 weeks in Germany 10 minutes after coming online.
EDIT 17:25 GMT: The 16GB model is now shipping in 4–5 weeks in the UK as well. It took just over 20 minutes. As far as I could tell, the 8GB model has been shipping in 4–5 weeks since it came online.