So far I'm finding it to work great and you can use it in compatibility mode so you can work on databases and not worry about them being unusable to others that don't have your current version. You can set your default format to A2K, A2K2 to A2K3, or A2K7. Also, you can be set to work in A2K7 mode, but when you open an A2K database it goes automatically into compatible mode so you don't have to worry about messing up someone's database.
There are some other cool things as well, including better form filters when having forms open, built in search box on the form (if using the built in record navigation), and more.