It's a download and will be exactly the same software as purchasers of the boxed editions will receive, except that you will have to burn a backup cd of the file if you need one. Rawshooter owners previous to a specific date (when Adobe purchased the software) will receive a free copy.
It's all good. Adobe is a wonderful company. I am looking forward to making LR my first step in the workflow. It's a delightful program.