I say "slightly different", but that's a bit of an understatement. The original training course runs for six hours. The OpenTech talk is twenty minutes. But hopefully that will be long enough to introduce some people to many of the interesting things that are going on in the Perl world.
It you're going to be in London in September, then the OpenTech conference is always a lot of fun. I highly recommend that you come along. It's cheap too - just a fiver on the door.