I don’t get it, why it says Firefox 73 if the current version is 68?
Current version is 72. What is your platform?
Debian, am I outdated or what?
I checked and I have Firefox Extended Support release which comes by default on Debian, should I switch to normal FF?
Depends, the Extended Support version its actualized with patches, and sometimes new features, without increase the major version number.
As you wish, you can wait without problems or change to the normal version. Normally the ES version wait to a important version and then, it upgrade to this version.