Here is a list of the commands that are in AutoCAD 2007 thru 2010 and when they were introduced.
You can see the list here 
2 Comments To "AutoCAD 2010 Release Comparison Matrix"
#1 Comment By PIYUSH PANWAR On 2012/04/09 @ 9:48 AM
I AM ARCHITECTURE STUDENT SO IT IS VERY IMPORTS FOR ME. DURATION OF WORKING TIME.
PLZ HELP ME.
#2 Comment By YASIR GILL On 2013/12/07 @ 4:07 AM