Thanks to San Francisco 49ers CEO Jed York for passing along a few photos from inside the team's new stadium, which remains under construction.Here's a shot from field level, another toward the field from above, one looking outward from above, another showing three levels of suites, one showing concourse work, another showing earthquake proofing and one more showing what York thinks might be the frame for "the largest outdoor video board."York has been tweeting these photos one after the other.