I just got my nexus 7 and checked for updates and it states Android 4.4.2 system update is available (restart and install)  So i pressed that and it downloaded and took a few minutes to install.  However after rebooting (I rebooted a 2nd time to make sure).  When I check the about screen it still states version 4.3?

Has it updated and for some reason still stating the old version or did the update fail?

Update: After trying it again it does seem to have worked, now updating to 4.4.3 - fingers crossed