Based on the search term "Excalibur plugin Premiere Pro new," you are likely looking for information on the by Stirling Tools (formerly known as Excalibur on older marketplaces).
The new update streamlines the process of creating subtitles. If you have a text document with your script, Excalibur can turn it into a sequence of Premiere Pro titles automatically. It calculates the timing based on average reading speed or length, giving you a rough cut of subtitles in seconds, not hours. excalibur plugin premiere pro new