Not a Lumia 920 owner, but have the Lumia 928 and it too got the update.
I just love how sexy this phone is. Sadly because its a Verizon exclusive (Unlocked) it isn't perfect on MVNO. Works great on T-mobile except that to send messages you have to set it to EDGE.
Works perfect on Net10, internet, SMS, MMS
Almost perfect on H2O, internet, SMS, (can't receive mms)
So I have it as my spare/secondary device. Can't wait to see how it WP8.1 comes out. My main device is Nexus 5, but just love how cool and minimalist the Lumia is.