Janet (D'Arcy Carden) states that there have been 25 versions of Janet. This means she is upgraded similar to a computer program. She also refers to herself in the third person when discussing herself as if she is an object.
You humans take something wonderful and ruin it just a little bit so you can have more.
Most of the episodes have extended versions; which are available to stream at the NBC website and Hulu, and included in the Blu-ray releases.