5.4-inch iPhone 12: $649
6.1-inch iPhone 12: $749
6.1-inch iPhone 12 Pro: $999
6.7-inch iPhone 12 Pro Max: $1,099

Going by the recent record of Jon Prosser, this is likely to be true. So the Pro models remain the same price as last year and the non-Pro models are either $50 more or less than the $699 iPhone 11. But regardless of the price in US, prices in MY is expected to go up this year.

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It is just my prediction. Based on the MY prices of the 2020 iPad Pro and MacBooks vs US prices, there is a slight increase.
Eg. the 12.9 inch iPad Pro starts from $999, MY is selling RM4399 compared to RM4349 previously. The 13 inch MacBook Pro starts from $1299, MY is selling RM5599 compared to RM5499 last year.

But of course I could be wrong. The MY price margin for iPhones is much higher so Apple may choose not to adjust.
The iPhone 11 Pro, 12.9 inch iPad Pro, and MacBook Air all costs $999 in the US, but in MY the iPhone is RM4899 compared to RM4399 for the iPad and MBA.