if you get the message: W: There is no public key available for the following key IDs EF0F382A1A7B6500 you can proceed with the upgrade #releasingstretch

Debian Project at 2017-06-18T11:24:05Z

if you get the message: W: There is no public key available for the following key IDs EF0F382A1A7B6500 you can proceed with the upgrade #releasingstretch