I believe, though I'm not certain, that users now have the ability to edit thread titles. If that is true, then it'd be nice if you could update the title whenever new information is released.
Official PlayStation Vita Thread - Games to be $40??
Official PlayStation Vita Thread - Release date confirmed!
...and so on and so forth. That will ensure that people use this thread as their source for the latest Vita information, as opposed to viewing other topics that discuss new Vita news while ignoring this one due to its redundancy.
People aren't going to bother clicking this thread unless they know that there is new information contained within, which is a problem inherent to any megathreads of this sort that have static titles.