Well this will be a short post, sorry to tell all the "BLOCK HEADS" out there like me, there isn't many enhancements. The first enhancement is Dynamic block lookup tables now by default are set to "Allow Reverse Lookup". Pretty small addition but was annoying. The second enhancement is the ability to change Dynamic block properties during Insert. This is a GREAT and welcomed addition. Now you don't need to actually place your dynamic block then adjust sizes or visibility states. This makes it much faster to insert Dynamic blocks with parameter changes. Especially if you have the properties palette anchored to the left or right side of your screen.
There has been a handful of Dynamic block bug fixes. But hopefully next years release of AutoCAD will have more Dynamic block enhancements then these two. If you want to be heard and help shape the future of AutoCAD, head on over to Myfeedback.autodesk.com and sign up in the MyFeedback portal to get enrolled in Beta testing.