Since there is some kind of leak of communication regarding the future releases and functions, I'm doing a roadmap which includes the the next planed functions and in which release they will appear.

Maybe you don't notice, but I take into account every suggestion (I have internal forms where I save my notes) and this topic is for public collaboration, maybe something that I have planned for a very upcoming release really is not so important (and the opposite).

This list is being updated everyday

Functions not yet "mapped"
- User accounts
- CDN / Multi-server support
- Change the remote upload function (validate images by stream)
- Image delete link
- Delete inactive images
- 100% ajax uploader

3.0
- Full dB implementation (MySQL; PG, etc)
- 3 sizes implementation for each image (discussion)
- Statistics
- Bans
- Configurable options in admin area

2.3
- Twitter API integration
- Multi remote upload (suggestion)
- Watermarks (suggestion)

2.2
- API modes for file-manager
- Private mode

2.1 (Kisa) (2012-05-15)
Chevereto 2.1 (Kisa) (2012-05-15) release notes
- File Manager introduction with ajax, search as you type and image filters
- MySQL dB introduction (PDO)
- New folder structure based on datefolders
- Added flood and external request prevention
- Facebook Comments for images
- Added tumblr, pinterest and improvements to the social share options
- Fixed issue with transparent gifs and resize
- Fixed coding on all script files
- Improved get_info() function
- Improved error output on main upload
- Improved filesize convertor function
- PHP 5.4 Support
- Updated javascript dependences
- Added enable/disable over resize config
- Config setting "max_size_mb" changed for "max_filesize"
- Added class.manage.php
- Added class.imageresize.php
- Added class.filelist.php
- Added class.db.php
- Added class.adminhandler.php

2.0.18 (2011-12-24)
- Fixed meta-description and meta-keywords usage
- Added short_url_image config
- removed remove_temp_files() usage

2.0.17 (2011-12-12)
- Fix imagecolorsforindex() in class upload

2.0.16 (2011-11-07)
- Improved js conditionals on peafowl.php
- Added Vietnamese language

2.0.15 (2011-10-19)
- Fixed coding issues on config.php
- Added support for directory alias
- Added img_viewer to the image array
- Updated Hungarian language

2.0.14 (2011-10-08)
- Multicodes dropdown for short URLs(suggestion)
- Improved filter for the thumb generation
- Fixed bug in short URL generation
- API now supports ShortURL generation
- Fixed bug with loading indicator on image change
- Tweak in the upload button CSS

2.0.13 (2011-10-01)
- Improved error handling for the Ajax requests
- Fixed issue regarding native json functions on PHP < 5.2.0 (issue | issue)
- Fixed bug with session_start()
- Improved PHP error_reporting switch
- Support for $_FILES on the bundled API
- Added function to atemp to rise low server limits
- Few CSS improvements on the default theme

2.0.12 (2011-09-20)
- Fixed issue on multiupload social buttons (original post)

2.0.11 (2011-09-04)
- Added switch to the get_thumb_html() and get_thumb_bbcode() functions
- Improved multicodes generation on peafowl.php
- Added Czech and Ukrainian languages
- Fixed Danish language
- Tweaks on the .htaccess file

2.0.10 (2011-08-26)
- Fixed wrong thumbnail generation (original post)
- Added temp_ files cleaner (original post)
- Fixed small bugs on peafowl.php
- Added new feature for the version() function
- Added Armenian language
- Fixed Russian and French languages

2.0.9 (2011-08-13)
- Added input auto select by default (original post)
- Added romanian language

2.0.8 (2011-08-04)
- Fixed issue with imageconvolution (post 1 | post 2)
- Added Danish, Welsh and Persian languages

2.0.7 (2011-07-24)
- Fixed XAMPP support (original post)
- Enhanced resize function for improved image quality
- Added external links support in the pages set-up (original post)

2.0.6 (2011-07-16)
- Fixed issue with invalid session ID
- Fixed random characters list
- Fixed some strings in Spanish language

2.0.5 (2011-12-07)
- Fixed __CHV_RELATIVE_ROOT__ on WAMP servers
- Fixed bug regarding the upload button reset (original post)
- Added check for curl_exec() function
- Added Thai language

2.0.4 (2011-07-04)
- Added multiupload links and codes (original post)
- Fixed bug regarding UTF-8 characters on <title>
- Fixed BB-Code for thumbnails (original post)
- Fixed bug regarding symbolic links on $_SERVER (original post)
- Fixed bug in /includes/uploader.php (original post)
- Check for the .htaccess file
- Pure PHP json_encode and json_decode function for PHP < 5.2.0 (PHP documentation | original post)
- Added Bosnian, Bulgarian, Hungarian, Finnish and Greek languages

2.0.3 (2011-06-26)
- Fixed error on multiupload thumb BB-Code
- Added title on social links on the default theme (original post)
- Fixed theme structure on header and footer (original post)
- Added "CHV" prefix for the script constants
- Added Swedish and Filipino languages

2.0.2 (2011-06-20)
- Fixed bug with black background in transparent thumbs
- Fixed server path detection that affects some environments (original post)
- Fixed bug regarding setting root as path on images and thumbs (original post)
- Fixed bug in German language (original post)
- Added new template function to display as BB-Code the <img> (original post)
- Improvements on the default theme CSS file

2.0.1 (2011-06-15)
- Fixed issue with "Select files" when using UTF-8 characters (original post)
- Removed empty language folders
- Added support for Dutch and Norwegian languages
- Improved French translation (original post)
- Improved debug mode (it nows shuts off the 'display_errors' directive)
- Fixed a security issue regarding full path disclosure (tweet) (secureless)

2.0 (Peafowl) (2011-06-14)
- Complete rewritten source code
- Added themes support
- Added multiupload feature (using uploadify)
- Multilingual support (mygengo) with autolanguage feature
- Added pages through themes
- Improved compatibility
- Canonical URLs
- Error pages
- Improved image upload
- BMP to PNG on the fly
- Bundled API
- Local and remote upload
- Improved support for more URL shortening services
- Added support for custom short URL services

Keep in mind that the roadmap doesn't include any specific date.