According to Intel, this firmware revision "has several continuous improvement optimizations intended to provide the best possible user experience with the Intel SSD." In addition, "supports the ATA Data Set Management Command "Trim"."
Actually, the update should get rid of the problem that caused Intel to pull the original TRIM firmware in late October. That firmware (revision 2CV102HA) was supposed to improve performance by taking advantage of Windows 7's TRIM functionality.
TRIM clears flash pages instead of marking them as available when users delete data.
The new firmware is available for download at http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=18363.