You can get the blue or black in last week of October, as per the current state. Even though I am waiting to get the pro max, will only buy the Natural Titanium when it is available right then in the store (not a pre-order kind of guy). I dont think the wait time will be two months long, do not see the need to pre-order. As the demand in the west (Apple's key markets) starts to come down, we will see more stock pushed to India. By mid October, we will have enough stock of top end models. Yesterday, the delivery was listed as November second half for Natural Titanium pro max and today it is showing the first week of November.
Apparently, there are two really difficult stages in the manufacturing process, causing delays.
1. 3nm yield rate of 55% (TSMC) causing a lot of delay in getting enough A17 Bionic SIPs.
2. Tetra Prism module seems to be harder to manufacture.
On top of this, there is chatter that Apple did not expect this much demand even for the base variant. Even the base iPhone 15 models have wait time of a week or two and I had not seen this before.