I know for a fact that they are still interviewing this week and I'm pretty sure we won't hear anything for a little while. I've got it on good authority that Claire is leaving soon and planning on sending out a letter updating people in the pool with new contact details and updating them with the current state of play.
Personally I've given up waiting for the postman every day, I'm confident something will eventually turn up and that the positions won't just disappear (why else would you continue to interview). I can't remember what date, but at some point in the near future GTR won't be allowed to cancel a train due to not having a driver, they can't do that with the current number of drivers, just another reason why I'm confident it will still happen.
As for criticising people for being excited about their new career and posting on the forum, I say carry on. It doesn't hurt anyone and for those that don't like it just unsubscribe to the thread.