Android 4.3 Factory Images Already Available for Nexus 4, 7, 10, and GSM Galaxy Nexus

And just like that, we’ve got Android 4.3 (JWR66V) factory images already available for the Nexus 4, Nexus 7 (WiFi and HSPA), Nexus 10, and GSM Galaxy Nexus (takju and yakju) variants.

If you don’t want to wait for the OTA to arrive or a .zip to flash, you can always flash factory images in adb. These do wipe your phone though, so keep that in mind.

Via:  Google Developers