The Google logo was displayed in a server-side rollout on the spacebar on the Gboard keyboard. However, the change has apparently already been abandoned.
You may have noticed yesterday that the Google logo appears on your device’s keyboard. If Gboard’s language is set to a value other than the system default, the spacebar shows the language name instead. The Google search link in Gboard has also been removed.
You may also have noticed that the change was undone within a day. This could be because the update quickly garnered criticism from Gboard users around the world. There is a community forum thread for the logo update that received almost 300 responses within 15 hours.
Fortunately, the Gboard spacebar is “Google” -free again. It also returns the search link.