The CCP EVE Online developer blog has been updated with a new post titled "Agents Made Easy". Agent changes are already deployed and Singularity and are scheduled to debut on Tranquility very soon. The post gives a lot of information about forthcoming changes.
Now, all agents in the game will have an effective quality of both -20 and +20: That is, in terms of calculating access to an agent based on your standings with his or her corporation, the system will assume that all agents are quality -20, making them (in some cases, considerably) easier to access; and at the same time, every agent will pay out rewards as if he or she had a quality of +20, meaning all agents of the same level within the same system security level (e.g., 0.6) will pay out the same amount for similar missions - and in most cases, they will pay out somewhat more than they used to.
Read more on the EVE Online dev blog.