I forgot to say earlier what's new, so here it is:
Taiga: Flisch, Huggs, and Yokto
Scrub: Huggs, Hydro, and Krakow
Rainforest: Nuke Rainforest (Ittiz-Nuke-Hydro Rainforest still exists, but Nuke Rainforest is now separated by Alpine.
Caves: Bono (Flisch), Darth (Huggs), Huck (Nuke), Neo (Krakow), and Sublyme (Yokto)
Lakes: South Tundra Lakes (both are in a rift valley, one is actually submerges beneath the ice), Huggs Lake
Islands: Ittiz Islands
Yokto Rocky is now two biomes, Flisch Rocky and Yokto Rocky
Glicker Alpine is now two biomes, Flisch-Krakow Alpine and Yokto Alpine
Ittiz-Nuke Alpine is now Ittiz-Nuke-Hydro Alpine
Other noteworthy changes:
The South Tundra is now connected on both continents.
Huggs River and Bone River now both flow from Huggs lake.
Ovi River no longer has an outlet to the ocean, and instead flows into the larger of the two lakes within the rift valley.
The smaller submerged lake in South Tundra is fed by a submerged river, which in turn flows into the larger lake.
Hydro Volcanic and Ittiz-Nuke-Hydro Alpine touch.
Flisch Temperate Forest and Flisch Rocky touch.
Huggs Volcanic now touches both Huggs Scrub and Huggs Savanna
Also, the creation of the new Taiga and Scrub biomes may shift borders around as well.