On September 17, Jumsoft announced Keynote Quartet, a package deal for four of their existing Keynote enhancement products: Keynote Themes FX, Keynote Animations FX, Keynote Backgrounds FX, and Keynote Objects FX. If you purchase all four products separately the cost would be $192. The package is available from Jumsoft for $99.
Keynote Themes FX is a set of five themes that consist of moving backgrounds and approximately 10 master slides. I wasn't particularly impressed with the moving backgrounds that were included in this package.
Keynote Animations FX provide some unique animations that could work well in the background as accents in your presentation. It is unclear from Jumsoft's website whether Animations are compatible with Keynote 4.0. However, since they are QuickTime movies with transparencies, one would assume so.
Keynote Backgrounds FX offers 20, 1024 by 768 QuickTime movies for use as backgrounds. The backgrounds on display at the website look pleasing. However, for my taste the animations may be too quick. That certainly is a case of personal preference but I find that slower moving animated backgrounds tend to be less distracting.
Finally Keynote Objects FX offers a useful collection of objects with alpha channels (transparent backgrounds) that may have a variety of uses beyond presentations.
Overall, the Keynote quartet package may be a good value depending on the types of presentations and audiences.