Danny Boyle, the director behind Trainspotting & 28 Days Later is going to be making the 'sequel' to Trainspotting based on the Irvine Welch novel, Porno. I put sequel in quotes because the only way this qualifies as a sequel is because it uses the same characters - its not really a continuation of the previous storyline.

I read Porno when it was released back in 2003 and really enjoyed it. The basic plot line is that the guys from Trainspotting get back together again to make a porn movie to try and get rich. Its a much funnier story than Trainspotting, and as long as they get the whole cast back together again, should be worth seeing.