The first update to Microsoft Windows Vista will arrive in the first quarter of 2008 in the form of Service Pack 1. The update is mostly a collection of existing fixes and tweaks for improving stability and reliability; it’s not a delivery with a lot of features. There will be a few minor enhancements, though, like the ability to encrypt multiple hard drive partitions using Vista’s BitLocker feature. Support for exFAT, a file format for removable storage and for EFI (extensible firmware interface) will also be added. The update is expected to be a hefty 1GB download and will require 7GB of free hard drive space to install, though much of that will be returned to the user after installation.