So here’s a quick useful drop of PSD goodness from Teehan+Lax, a design firm from Toronto:

Over the past few months we’ve had to create a few iPhone mock ups for presentations. The problem we’ve encountered is the lack of resources to help us design something efficiently. Up until now we’ve used a nice PSD from 320480.com but we still found ourselves having to build out additional assets or heavily modifying bitmap based buttons and widgets.
Since we know we’ll be doing more of this, we created our own Photoshop file that has a fairly comprehensive library of assets – all fully editable.

Grab the PSD here.

Hopefully somebody will refactor this into Fireworks PNG.