Your first place to look for whether this is something you want to do should probably be the Dell description of why they produced this new BIOS, and what it's supposed to fix. There usually is a "technical data" link somewhere to describe a change of this kind.

Do they give you any information?

Without knowing what it's for, you're asking "should I eat a hard boiled egg or a crab cake today." It's a personal choice.

John