There are a few improvements to the information that you will be able to see about your clients and leads.
1. In a client/lead you will now see the date that they were created, as well as who created them. This is located in the same box that shows you the last time of contact (based on the communication history) on the left while in a client/lead.
2. When in your client/lead list you will now be able to filter by the date added.