Sony will soon be bulking up its line of Micro Vault USB thumb drives, so to speak, by adding several new models that offer either increased capacity, increased transfer speeds, or both. Though not reaching the 8GB plateau of the Micro Vault Pro, the upcoming units still manage to pack between 256MB and 4GB of data into a pocketable design, and all feature Sony's Virtual Expander software for automatically compressing your bits to store up to three times the drive's labeled capacity. Besides the storage boost, Sony will be offering the same size drives in a lineup called the Excellence range, which promise zippier read and write speeds of 29Mbps and 23Mbps, respectively. While all the new models are expected later this month, Sony is keeping pricing details...hold for terrible pun...locked up in the "vault."