To reduce load on their servers here are some Coralized versions of all the links above:We are pleased to announce that TrueCrypt 4.3 has been released. Among the new features is full compatibility with 32-bit and 64-bit Windows Vista, support for devices and file systems that use a sector size other than 512 bytes (such as new hard drives, USB flash drives, DVD-RAM, MP3 players, etc.), auto-dismount when a host device (e.g., a USB flash drive) is inadvertently removed, and many more. In addition to new features, there are many significant improvements.
TrueCrypt home page
Future development goals
Forum thread about Mac OS X version