The majority of Haswell's first batch of processors will be low power chips (i3s and Pentiums coming later 2013).
With thermal envelope under 65W these will be great candidates for passive builds. Also it's nice to see Intel using HD4600 GPU in all processors. The list includes:
✓ Core i7-4770S, 3.1 GHz, 4 Cores / 8 Threads, 65W
✓ Core i7-4770T, 2.5 GHz, 4 Cores / 8 Threads, 45W
✓ Core i7-4765T, 2.0 GHz, 4 Cores / 8 Threads, 35W
✓ Core i5-4670S, 3.1 GHz, 4 Cores / 4 Threads, 65W
✓ Core i5-4670T, 2.3 GHz, 4 Cores / 4 Threads, 45W
✓ Core i5-4570S, 2.9 GHz, 4 Cores / 4 Threads, 65W
✓ Core i5-4570T, 2.9 GHz, 2 Cores / 4 Threads, 35W
✓ Core i5-4430S, 2.7 GHz, 4 Cores / 4 Threads, 65W
Source: VR-Zone (chinese)
