| POSSIBLE ANSWERS | PREDICTED DATE | TODAY |
| May 22, 2008/ May 11, 2008 | (closed) |
http://github.com/rails/rails/commits/v2.1.0_RC1
But no mention of this (except that it was imminent) on the official blog. Just other blogs talking about the release candidate.
for news

This market is an attempt to guage when Rails 2.1 (or it’s first “release candidate”, e.g. 2.1RC1) will be released. In other words, we’ll cash this out on the day a release or a release candidate is available. Preview releases like last time for 2.0 don’t count.