How long until AI is fixed?

I don't believe the AI speed is as easy to balance as people think it is, and if CM releases a patch resolving the issue I guess they want to be sure that the speed scales properly with AI difficulty. The AI being so fast is usually misnamed here as a problem with straight line speed but in reality it is (much) more complicated than this. Even for example if you use the mod on Race Department that lowers the max bulk torque so that indeed the AI will become slower overall they still retain their unpredictable nature. Sure, they will be slower on corner exit (and hence also on straight line speed), however in fast corners they will be now two times as fast as they are in slow corners and depending on tire temperature and/or wear they become faster or slower. So you have circuits in which the speed is too slow and circuits in which the speed is still too fast, as you have parts of the circuit in which they are extremely slow and parts in which they are extremely fast, so that the speed decrease is not harmonic at all.

It's not so easy to have an AI that carries similar pace in every corner of a circuit and it's still more difficult to do so for every circuit involved. Then you add changes of difficulty and how such changes impact the AI (and having that decrease be as linear as possible), you add in tire wear and temperature and it's not an easy task to balance the speed of AI properly. If they release a fix they must be sure that the speed decrease is as fluid as possible and work in the same way in the different modes. Doing so requires not only a lot of work in the programming side but especially in the QA department. 

For this I believe it is taking all this time, and, personally, I much prefer that they take all the time they need to actually tailor AI speed properly instead of releasing a quick fix that just patches a hole here and there but by doing so making the AI even more unpredictable to drive against. There's nothing worse than unpredictability in AI because pace you can fix by tailoring difficulty, but when you have AI that is all over the place as pace goes then it is really difficult to find a difficulty that suits your personal skill.