Crucial SSD, should I upgrade firmware? (just purchased)

I would update the drive, but always make a backup! The release notes mention:
• Improved compatibility with certain SAS expanders and peripheral RAID cards.
• Improved throughput stability under extremely heavy workloads.
• Improved data protection in the event of unexpected, asynchronous power loss.
First point is not important for most customer, but the last two affect and especially the last affects everybody.