Here is the link to the static (frozen animations) slideshow.
Since this month's presentation had loads of animations in it, here is a link to a video version of the slideshow that rushes past most everything, but plays the animations at their proper speed.
And here is a link to a tutorial for building a simple voice memo recorder with Workflow.
Finally, if you go to the iOS App Store looking for Workflow, you want the one with the colorful pixel "W" icon. If you land on the one with its description in Dutch, that's the wrong one.