We have been keeping an eye out for WiFi tethering to makes its way onto different first generation WP7 devices via Mango and firmware updates, and now it seems that the LG Optimus 7 just got it.  According to users on Plaffo, a new update is being pushed for the Optimus 7, which adds the ability to use your phone as a wireless hotspot.  Sadly, not all first generation devices will be able to do this, but it looks as though the Optimus 7 is one of them. 

We haven't heard anything from our peeps yet.  Has anyone else been able to get this up and running?

Source: Plaffo (Thanks, Antonio!)