The endorsement process is typically stated to take 4-6 weeks. However, it can sometimes be faster and sometimes be slower.
The majority of the time is spent waiting in a queue until your application starts to be processed, so you won't get any updates until they actually start working on it.
If there are no problems with the application then the only update you will receive will be the final approval / congratulations email.
So I submitted mine not too long ago but received a response stating my Sponsor approved and is now in review.
So does that mean it's already being reviewed or does that just simply mean it's now in the queue? And if it's in queue, based on your response, does that mean when someone does actually pick up the application I'll get another email indicating it's actually being worked now?