In January, North Korean officials announced that Americans now may visit at any time of year for up to seven days. Previously, Americans could visit only during the Arirang Mass Performances, August-October, on five-day tours.
Travelers (even a party of one) still must have a guide. Currently, 16 companies can arrange tours to North Korea; visit http://wikitravel.org/en/North_Korea. The only US company currently offering tours is Asia Pacific Travel (Kenilworth, IL; 800/262-6420).