– Compressing speed and Memory requirements were increased. Default dictionary size was increased: Fastest: 64 KB, Fast: 1 MB, Normal: 4 MB, Max: 16 MB, Ultra: 64 MB.
– 64-bit version now supports 1 GB dictionary
– 7z/LZMA now can use only these match finders: HC4, BT2, BT3, BT4
– Compression ratio in Zip/GZip/Deflate in Ultra mode was increased
– Some bugs were fixed