According to this press release on the official site, people can now sign up for a 5-day "weekly" pass. The pricing is similar to the one-day pass, $15 for the 5 days. There will also be a $101 hold on the credit card, the same as with the daily users.

The press release is dated March 4, 2011. The rest of the website doesn't mention the 5-day option yet.