Transport Belts
Transport belt costs have been reduced across the board, and all transport belts will craft in pairs of 2 like the standard transport belt.
Costs
Normal: Unchanged
Fast: 6x gear, 2x transport belt
Express: 12x gear, 2x fast transport belt, 10x lubricant
Underground Belts
Underground belts now consist of transport belts equivalent to the underground length, and some iron plates to create the underground sections.
Alternate Costs
With the setting enabled to use previous tiers, costs are:
Normal: Unchanged
Fast: 24x gear, 2x underground belt
Express: 48x gear, 2x fast underground belt, 80x lubricant
Splitters
Splitters now consist of two of the tier belt equivalent to the splitter tier, and some additional gears and circuits.
Options
If you dislike items not requiring their previous tier in their recipe, you can turn this on with a modsetting. This will change the recipe retroactively, so you can change it mid-way through a game.
Attribution
Mod-thumbnail used from: https://www.flaticon.com/free-icons/conveyor-belt, Conveyor belt icons created by Freepik - Flaticon