Office Online just launched a site redesign that reworked the Access 2007 content. You might find it interesting.

 http://office.microsoft.com/en-us/access/FX100487571033.aspx?ofcresset=1

 There is also a developer map that is designed to help people understand what is new from a developer perspective.

http://www.microsoft.com/downloads/details.aspx?FamilyId=771AEB45-9D27-4D1F-ACD1-9B950637D64E&displaylang=en