Deepslate + Deepslate ores
Barrel next to a Village Names house
Raw ores and copper!
Banners
New blocks!
Barriers (Only is visible if you have the item in your hand in Creative mode)
Deepslate fade effect
New fences + lantern (Yes, there are other wood blocks too)
Blast furnace in a Village Names house
Signs
New colored blocks! (Concrete has an adjusted palette to match the 1.7.10 colors)
Full NEI Page (2.3.1)
Smoker in a Village Names house
Ancient debris, netherite, nether gold ore