No word yet on when it will be rescheduled for, but obviously we'll let you know as soon as we do. Until then, you can always console yourself by checking out what we expected to see at the event - namely, Android 4.2, the Nexus 10, and the Nexus 4.
[Update: Now official] Google rolls out new Material Play Store interface with bottom navigation bar
[Update: S9 and other values increased] Samsung will give you up to $600 on trade-in for a Pixel 3, iPhone X, Note9, or Galaxy S10 if you buy a Galaxy Note10
[Update: Important warning] Nest devices will lose IFTTT support this August