You may still get the notification even running Infamous. I was running the earlier builds before the official jelly bean update and I received it a few times myself. Even got bored one day and tried to let it update. It downloaded but won't apply since it wasn't the stock recovery. Just figured I would share that.
Sent from my dark hole called an office.
http://www.sammobile.com/firmware/ in the search type T999 and see if someone else can confirm the same info.
Downloading: T999UVDLJC_T999TMBDLJC_TMB.zip | 732.8 MB