Two different sources have stated that NetCom would launch tethering support as of yesterday (to coincide with the iPhone 3GS launch). I can't see anything on the NetCom site itself though.
I can only say that there is no sign of it yet on my handset (but then mine took three days longer than expected to receive the visual voice mail update - no idea why) - so keeping fingers crossed that its on its way.
Update: 18:55 4th august 2009.
Regards the network update mentioned in the comments.
MMS: Yes
Tethinging USB: Yes
Tethering Bluetooth: Yes
Update (01-08-2009): iPhone 3.0 firmware release and tethering for NetCom - official support
I have to say I'm disappointed in NetCom today.
Apple have just released the iPhone 3.0 firmware. This includes both MMS and tethering.
Now - I have very little use for MMS - haven't used it much on previous phones. But tethering is a useful tool when you're stuck away from any wifi and need a brief connection.
Telenor have turned this functionality on by default - but NetCom did not appear to have done so.
Read on to hear what NetCom had to say ...