According to this US PS Blog post, the European Home beta is to start "very shortly."
"In Europe, SCEE is... beginning their expanded closed beta, directly targeting consumers who have been most active on PlayStation Network and PlayStation Store," said Home director Jack Buser.
"SCEE will be in email contact with their PSN audience very shortly."
The info came as part of a post about how Americans can get in on the US beta. In short, you just have to download a theme to get a shot at being involved.
"Later today, the PlayStation Store will be updated with a PlayStation Home theme," said Busre. "By downloading the theme, users are submitting an application to join the PlayStation Home Beta test community.
"We will be using a variety of criteria including activity on the PlayStation Network to determine eligibility for the Beta community. Existing beta testers have automatically qualified to be part of the expanded beta."
More through the link.