General Improvements

Encase Expert Witness Compression Format is now supported, so Computer Forensic Experts can use TestDisk and PhotoRec more easily.
Under new Vista OS, harddisks are now being reported again.

TestDisk

If LBA48 support seems missing (HD bigger than 130 GB not supported by the OS), TestDisk will warn the user. This problem is common when a user reinstalls his OS and forgets to install the latest service patches.
NTFS: TestDisk should be able to list files from NTFS partitions even if some filesystem corruption has occurred; more importantly, it will allow the user to copy whatever file data it can as well.
FAT: Improved heuristics to find the first FAT area during boot sector rebuild.

PhotoRec

A new method for handling fragmented data is now used, making recovery more reliable and faster.
PhotoRec can be set to search for files in FAT16/FAT32 unallocated space only; which avoids wasting time recovering files that are still accessible, making the recovery of 'lost files' much faster and more efficient.

New file formats have been added:
.3g2 (Mov video family)
.aif Apple Audio
.all .cpr Cubase Song
.blend Blender
.cam Casio QV Digital Camera Image
.flac Free Lossless Audio Codec
.mdf Microsoft SQL
.swf Macromedia Flash
.vcf VCard (not confused with .txt anymore)