Changes in the crafting recipes:

Instead of potion bottles. Smelting sand will now give glass blocks.

You will now instead craft the potion bottles in the Workbench using Glass Blocks.

Crafting the new glass windows:

Using the Builder's Workbench you can craft the new glass windows.

Variants:

There is the one that you can place Vertically and on the floor,

This type of glass block takes alot of hits to break, Use a pickaxe to break them faster. For reference using a cobalt pickaxe will only take it two hits to break.