1. Added support for ZIP archives containing Unicode file names in UTF-8 format. When creating ZIP archive, WinRAR stores names in Unicode only if they cannot be stored correctly using the current single byte character set.

2. Added decompression support for WinZip AES encrypted ZIP archives.

3. Improved Unicode support for RAR and ZIP archive names.

4. "Ask before overwrite" and "Skip existing files" update modes are now available in archiving dialog. They allow to specify WinRAR behavior when updating already existing files in archive.
Unlike already available "Fresh existing files only" and "Add and update files", these new modes ignore file date and compare only file names.

Command line equivalents of these modes are:
a) switch -o enables "Ask before overwrite" archiving mode;
b) switch o enables "Skip existing files" archiving mode;
c) switch -o+ enables "Overwrite all" mode (default for archiving).

5. New "Add to context menu" option in "Profile parameters" dialog. If this option is on, the profile name will be displayed in Explorer context menus allowing to activate a profile from context menu.

6. New -cp switch allows to select a compression profile in command line mode. It is supported only by GUI WinRAR.exe, not by rar.exe.

7. New "Options" page of archiving dialog contains the group of settings modifying the behavior of "Delete files after archiving" option from "General" page:
a) Delete files. Delete files normally like in previous WinRAR versions.
b) Move files to Recycle Bin. Deleted files are placed to Recycle Bin.

Command line equivalent of this option is -dr switch.
c) Wipe files. Before deleting file data are overwritten by zero bytes to prevent recovery of deleted files.

Command line equivalent of this option is -dw switch.

All these options have an effect only if "Delete files after archiving" is on. You can enable any of these options in the default compression profile to change the default behavior of "Delete files after archiving".

8. WinRAR "Extraction path and options" dialog is now resizable.
You can use the mouse to drag its border to the desired size and provide more space for folder tree pane. WinRAR will store new dimensions of this dialog.

9. New "Update" SFX script command and "Update mode" group of options in "Update" page of "Advanced SFX options" dialog.
These command and options allow to check time and implement file time based updating;

10. SFX script "Shortcut" command and "Add shortcut..." command in "Advanced SFX options" dialog now allow to specify an icon file containing an icon associated with shortcut.

11. New "Wipe temporary files" option in "Settings/Security" dialog provides more secure, though slower, way to delete temporary WinRAR files.

12. WinRAR and RAR display the total progress bar when unpacking a multivolume RAR archive if all volumes are present in the same folder.

13. WinRAR and RAR automatically expand names of environment variables in list files. For example, a list file can contain lines like:
windir\*.exe
USERPROFILE\Desktop

This feature is available only in Windows RAR version.

14. Added support of TAR archives with non-zero "extra field" data.

15. Added support of TAR archives, which does not contain the end of archive entry consisting of 512 zero bytes.

16. Improved Unicode support when dragging files from WinRAR window.

17. Shift+Tab key combination can be used in main WinRAR window to switch the input focus between interface elements (files, comment, tree, address) in reverse order. In previous versions Shift+Tab used the same order as Tab.

18. Corrected a possible WinRAR crash when opening truncated UDF ISO files.

Version 3.90

1. WinRAR version for Windows x64 is available. If you use
Windows x64, it is strongly recommended to install 64 bit
WinRAR version. It provides a higher performance and better
shell integration than 32 bit version.

2. RAR compression speed is improved for multi-core
and multi-CPU systems. This improvement is most noticeable
in Windows Vista and Windows 7 operating systems.

3. "Remove duplicate folders from extraction path" option
in "Settings/Compression" dialog is replaced by more universal
"Remove redundant folders from extraction path" option.
This option will eliminate redundant archive name based folders
from extraction path if you unpack an archive with
"Extract to DestName\" context menu command and if archive
root folder contains only one folder and no files.

4. Changes in "Extraction path and options" dialog:

a) "New folder" button creates a new subfolder in currently
selected folder;

b) F2 key renames a selected folder in the folders tree;

c) F5 key updated the tree pane contents;

d) Del key removes a selected folder in the folders tree.

5. You can enable "Show seconds" option in "Settings/File list"
dialog if you wish to see seconds in file dates in file list
in WinRAR shell.

6. "Where to check for SFX archives" options group
in "Settings/Integration/Context menus items" dialog lets
you to control processing of SFX archives in context menus.
For example, if you frequently right click ".exe" files
on slow network disks, you can turn off "Network disks" options
to minimize the delay before displaying the context menu.

7. If you sort files by name in the file list in WinRAR shell,
WinRAR will use the new logical file name sorting,
same as in Windows Explorer, considering digits in file names
by their numerical value. So files will be sorted as
1.txt, 2.txt, 10.txt instead of previous 1.txt, 10.txt, 2.txt.
This new sort behavior is available in Windows XP Service Pack 2
and newer.

8. Ctrl+W key combination can be used to close the main WinRAR window
also as WinRAR viewer windows. "View as Windows text" shortcut
in WinRAR viewer changed from Ctrl+W to Ctrl+I.

9. New command line switch r disables recursion completely.
So 'rar a r arc dirname' command will add only the empty
dirname folder and ignore its contents. By default, if dirname
does not include wildcards, RAR adds its contents even if
-r switch is not specified.

10. If used when extracting, the new command line switch -ai forces
RAR to ignore file attributes. When using this switch,
extracted files will always have attributes assigned by
operating system to a newly created file by default.

11. If output file name is not specified in "cw" command, console RAR
will send comment data to stdout.

12. When compressing stdin data with -si[name] switch, RAR sets
modification time of archived entry to current system time.
Previous RAR versions did not fill this field, resulting in
meaningless modification time for stdin.

13. Message displayed when you place the mouse cursor on WinRAR
tray icon includes the archive name now. Previously only
time left and total percent were displayed for archiving operations.

14. New 'Shutdown' variable in 'Software\WinRAR\Policy' registry key
allows to disable "Turn PC off when done" option for security reasons.
Read "Configuration settings/Registry variables" for more details.

15. Better shell extension performance. Now WinRAR context menu will be
more responsive when working with thousands of selected files.

16. Improved compatibility with high DPI Windows display mode.

17. Bugs fixed:

a) WinRAR could fail to open tar or tar.gz archive if such archive
contained a file larger than 8 GB;

b) WinRAR context menu did not work properly in Windows 7 beta
if icons in context menus were enabled and user clicked
a file inside of Windows 7 Library folder;

c) previous WinRAR versions failed to rename files having 5 or more
continuous spaces in the name. WinRAR shell does not display
such spaces for safety reasons, because they can hide an actual
file extension. But this security measure prevented the rename
command to work properly.