Rails 3 (beta3) and paths in the console

Did I miss some release note somewhere? I used to be able to, from the
Rails console, get paths and urls using:

app.posts_path or app.post_path(p)

Now, trying to do that, I get an error stating that those methods are

irb(main):001:0> app.posts_path
NoMethodError: protected method `posts_path’ called for

(Windows, Rails 3beta3, Ruby 1.9.1p378)