From VOA:

Iran says it will release one of three American hikers who were arrested and detained more than a year ago. A text message from Iran’s Culture Ministry Thursday said one of the Americans will be released Saturday morning at the Estaghlal hotel. Iranian officials have offered no other details, and did not say which hiker will be freed.The three Americans – two men and one woman – have been held in Tehran’s Evin prison. Shane Bauer, Sarah Shourd and Josh Fattal were arrested on July 31, 2009, along the Iran-Iraq border. Their families say the three were on a hiking trip and accidentally strayed across the border into Iran. Iranian officials have accused the three of spying, but their families say they are innocent.

Meanwhile, a murky dissident group in Iran is claiming evidence that the regime in Tehran is building a secret nuclear facility northwest of Tehran:

An Iranian dissident group said on Thursday that it has identified a previously undisclosed nuclear facility under construction northwest of Tehran, claiming to have evidence that shows the Islamic nation is deceiving inspectors and moving forward in its pursuit of a bomb. Details about the facility were scant, and experts said the allegation that construction at the site is nuclear-related could not be confirmed.
The information was presented by the People’s Mujaheddin Organization of Iran, a group that has been on the mark in the past in exposing Iranian nuclear activities, including the identification in 2003 of a large centrifuge installation at Natanz.
But U.S. officials have greeted some of the organization’s other claims with skepticism, and note that it has for years been on a State Department list of designated terrorist organizations.