I think they will probably just give the same old bonuses. I have no doubt that the AI will be vastly improved, but it will be the same for all levels. No matter how good the AI is, it won't take long for the master players here to determine what makes them tick. Ultimately, they are still programmed, and we will eventually figure out what they are going to do. I guess that's just the limit of what AI programmers can do when dealing with a wide distribution like video games.
Maybe we'll get a combination of both. Production bonuses and penalties on one scale, and AI strategy on another scale. It would be cool to play against AI on a lower setting that do simple and straightforward things, but a higher setting might see feints and some planning ahead in war and peace. I would like an AI civ that actually aims for a space race win and does what it can to emphasize production and science, or one that attacks a small city with a small force, then a few turns later, sends a large stack where the defence is light.
I would probably like to play on a level playing field as far as production and science, but put the AI strategy all the way for fun, interesting games. I think that's what most people want here, since most of the talk has been about better AI, not bonuses. But like I said, I do think that we will figure out how the AI "thinks," then we will need production bonuses for a good challenge.