BitMinter client v1.5.0beta1 is ready for testing.
New:
- Add support for Antminer U1
- Fixed a memory leak that could happen when mining on BFL ASICs. This could slow down the program and eventually make it lock up completely.
- Display approximate earnings per month rather than per day
Please check it out:

Edit: Setting the Antminer clock frequency or blinking the LED not yet supported. I hope to have that ready soon.