From what I'm told, they are kind of waiting to get this out. You can get multitouch working (I have my browser using multitouch). Apple had a patent which scared many companies (Google and HP alike) but Apple lost their lawsuit against Palm (read
here) so you never know what Hero build or Donut will give us.
The Hero build right now does not have it. The only thing I've seen is the browser but there may be others, I just haven't looked. Google "apple palm multi touch" and you can get a bunch of news articles abou this.