H1B visa- current company vs Future company

Good morning friends, looking for some quick support.

While filing h1b petition mentioned my future company as current employer and reflecting in DS160 and petition got approved. But actually I work for a different company which I mentioned as past employer in DS160. What are all the documents I should be prepared before the interview?

You need to talk to your H1B employer and their immigration lawyer for the documents you need for H1B stamping.