Sadly no images yet, but here are a bunch of cool seeds for 1.7.2 for the new Biomes! Enjoy!

Mesa
Seed: Mom

Cold Taiga
Seed: Leave blank for a random seed

Roofed Forest
Seed: -1618507012

Savanna
Seed: 61059724

Jungle
Seed: -1390850005444261255

Ice Plains Spikes
Seed: -3172071899326743199

Mushroom Island
Seed: 6719172414383781019

Flower & Forest
Seed: 584030580

Mega & Taiga
Seed: 123456789

Stone Beach
Seed: Lalalabored

Birch Forest
Seed: -955251022