The Dutch HbbTV Forum highlighted in his report HbbTV in Europe that the Standard is making great progress in countries like France, Germany or Spain. This is motivated because of they are delivering the best developed services.
In parallel, central and eastern Europe are also pushing hard and fast, thanks to the many new services they are publishing.
The report, written by Frank Visser (iMmovator), Rob Koenen (TNO) and Robert Briel (Broadband TV News) gives a very interesting overview of the current status of HbbTV in Europe.
If you want to read more, you can download it for free (both english and dutch version) from this link: http://hbbtv.nu/the-hbbtv-in-europe-report-in-english/