The multi-touch issue that was found to be affecting some Nexus 7 (2013) units is being given the boot via an update to build JSS15Q, which is currently rolling out over-the-air.
Over on the Google Product Forums, Googler PaulW (who’s been pretty active in responding to user concern) has advised that the update which is inbound will address the multi-touch issue that was reported:
As a couple of you have mentioned, there’s a new system update that’s started rolling out for your Nexus 7s. This update does address the touchscreen issues discussed in this thread. If you’re one of the people experiencing touchscreen issues, please let us know how it’s going after you’ve received and installed the update.
A few users who have already received the update confirm that touch is functioning much better now, though there’s still a few instances of unintended double taps here and there. But still, it’s good to see Google was quick to jump on fixing the rather irritating issue that was marring the experience on what is otherwise an excellent 7-inch tablet.
The update is rolling out gradually as usual, so don’t freak out if you don’t see it on your new Nexus 7 yet. We’ll be sure to update this post once someone grabs hold of the OTA file (efforts for that are ongoing over at XDA-Developers), and you can try to force the update through the Settings » About tablet » System updates menu in the meantime.
Source: Google Product Forums