I think your missing the point of powder toy updates. Its not something that you should just expect to happen every week or so, but rather a pleasant surprise that will help make the powder toy a more enjoyable program. Simon and other coders work to make a this a better game out of the (finger quote) "goodness of their hearts" . Please try to understand that new stuff for the PT is not the whole point of it, I used to only look forward to new updates, and i found that the PT got boring very fast. Just enjoy whats there, as far as i know, no other particle simulator has nearly as many elements and is as easy to use.
All that said, I am interested in any new features/elements that will be incorporated into v 42.0 .