The update comes from Googler PaulW in the Google Product Forums where the issue was first lodged.
Thank you for your patience while we’ve been working on this. As Justin mentioned, there is a new over-the-air update for Nexus 7 rolling out now that addresses the GPS issue discussed here. We look forward to hearing feedback about your GPS experience after you’ve received the update.
The update is rolling out now and it’s great to see that these issues are being discovered and also fixed by the time the Nexus 7 goes on sale here.