iPhone 12 and iPhone 12 Pro will be launching on Friday, 23rd October 2020 while iPhone 12 Mini and iPhone 12 Pro Max will be launching on Friday, 13th November 2020.
With regards to 5G/LTE networks in Singapore, we are getting the following models:

The Samsung Galaxy Note10 and Note10+ will be launching in Singapore on Saturday, 24th August 2019.
For the first time, there is an additional Note model available, which is the plus model, Note10+.
Huawei P30 Pro was launched in Singapore back on the 6th April 2019. As of today, there are four colors available for the P30 Pro, Amber Sunrise, Breathing Crystal, Aurora, and Black.
Two storage capacities are available for the P30 Pro, 256 GB, and 512 GB. The 256 GB retails for S$1,398 while the 512 GB retails for S$1,698. You can get both models on the official Huawei store on Lazada.
Google Pixel 3a and Pixel 3a XL was launched in Singapore on 8th May 2019.
Pixel 3a retails for S$659 featuring a 5.6″ display while its larger sibling, the Pixel 3a XL, retails for S$779 featuring a 6″ display.
The iPhone XR will be launching on Friday, 26th October 2018.
With regards to LTE networks in Singapore, for the iPhone XR model, we are getting the A2105.
Huawei Mate 20 Pro and Huawei Mate 20 will be available in Singapore from next Saturday, 27th October 2018 at all Huawei Concept Stores, local telecommunication operators, selected consumer electronic stores, authorised
mobile retailers and selected online marketplaces.
Huawei Mate 20 Pro
The Huawei Mate 20 Pro retails for S$1,348 and is available in Emerald Green, Twilight, and Black.
The Pixel 3 and Pixel 3 XL will be launching on Thursday, 1st November 2018.
The Pixel 3/3 XL will be available in three colors, Clearly White (White), Just Black (Black), and Not Pink (Pink). For each color and model, it is available in either 64GB or 128GB.