Update: It looks like this method works only if your device runs the yakju/takju of the Galaxy Nexus ROM. yakjuxw/jp versions — the ones that Malaysians get — will have to wait a little while more to get Jelly Bean. Sorry folks. For those who provided feedback, thanks for the info.
Alternatively if you don’t want to wait, you can convert your Galaxy Nexus to yakju/takju. This version is fully supported by Google whereas the other versions will get their updates pushed by Samsung or in some cases via operators. It’s a fairly simple process provided that you know what you are doing, and the methods are easy enough to find on the internet machine, just Google it.
From your Galaxy Nexus homescreen here’s what you do:
Go to Settings > Apps > swipe to look for the “All” panel.
In the “All” panel, scroll down and look for “Google Service Framework” and tap that. Inside the “Google Services Framework”, tap on “Clear Data” and then “Force Stop”.
Once you’ve done that go back to settings and look for the update under “Systems Update” in “About Phone”. If it doesn’t work the first time around, try it for a few times, you might get lucky and get Jelly Bean faster than scheduled.
Head on over to after the jump for a video instruction, the step-by-step starts at minute 1:37. We don’t have a Galaxy Nexus to test this on, if you do and you tried it, let us know if it works or not. Thanks and good luck!