Please check out our completely updated presentations here.
This page can be found from our APEX Home page on OTN towards the bottom of the page under More Information.
Here you will find many of the standard presentations including 3.0 Overview, New Features, Access Migration, and Forms Developers.
There are also several one off presentations from Mike Hichwa (Advanced APEX, and MWOUG 11g Keynote), Joel Kallman (Managing APEX) and myself (Managing Large Application Development).
I know many people were asking for copies of several of these presentations.