Is there a page that lists some of the drivers to be included in the next ZENworks Imaging Driver Update?

I have a couple dozen Acer IconiaTabs that will not PXE. I can PXE any other machine I have on the same cable/vlan/etc. so I am pretty sure it has to do with the driver.

I get:

GATEWAY IP : 10.18.nn.nn
PXE-T01: File not found
PXE-E3B: TFTP Error - File Not Found

I have ZCM11 (Windows Server 2008) with the ZENworks Imaging Driver Update for September applied. The novell-tftp.log registers:

Read request from 10.18.nn.nn:2070 failed:
Error in sending an OPTION ACK packet
Filename after converting to lowercase: -
File not found : -

The device is an Atheros AR9002WB-1NG.
Vendor ID: 168c
Device ID: 002b
SubSystem: E031105B
Rev: 01

Any info or tips would be appreciated.