The network also confirmed that it has renewed spin-off Stargate Atlantis for Season Four, as first reported today by GateWorld (story).
Here is the network’s statement:
SCI FI Channel is proud to be the network that brought Stargate SG-1 to its record-breaking 10th season. Ten seasons and 215 episodes is an astounding, Guinness World Record-setting accomplishment. Stargate is a worldwide phenomenon. Having achieved so much over the course of the past 10 years, SCI FI believes that the time is right to make this season their last on the channel. SCI FI is honored to have been part of the Stargate legacy for five years, and we look forward to continuing to explore the Stargate universe with our partners at MGM through a new season of Stargate Atlantis.
SG-1 aired for five years on the premium cable network Showtime, moving to SCI FI for its sixth season in 2002.
Read the full story at Sci Fi Wire.
New episodes of both Stargate SG-1 and Stargate Atlantis continue Fridays this summer starting at 9 p.m. Eastern/Pacific, leading up to the mid-season finale on September 22. The second half of the season will begin in March, leading to SG-1‘s final bow on SCI FI in June.
(Thanks to NowIWillDestroyAbydos for the tip)