The fourth season is expected to air on the BBC in the UK and Starz in the US in the summer of 2011. Exact date hasn't been announced as of January 2011 (someone pretending to be the official Twitter account for the show gave a false date at one point).
Yes the Torchwood DVD's do feature the "Next Time. . ." segment after each episode.
Series 2 Episode 4 Meat
no, but torchwood will cross over with doctor who
Torchwood
Martha appears in the Torchwood episodes Reset, Dead Man Walking and A Day in the Death.
The episode where Jack and Ianto kiss in Torchwood is called "Adam." It's the fifth episode of the second season.
Russel T Davis
Torchwood episodes all go on for 50 minutes (give or take a minute or two each episode). The new series, starting next year will be made up of episodes lasting an hour each.
Torchwood is having it's next seasons on audio, produced by Big Finish productions.
in the last episode of torchwood, series 2, toshico and Owen died, so by the last episode of series 4 dr who, they wouldn't be there.
The Doctor is never in Torchwood, but at the end of 'End of Days' you can hear the TARDIS and then Jack is in 'Utopia' which is the eleventh episode of series three of Doctor Who
series 4 episodes 10-12