Changes in the original public beta:
•CS:S Orange Box support. Tweaks and fixes to ES, sqlite3, playerlib, usermsg, popuplib, repeat, VDFs, etc.
•Reduced size packages. Separate downloads for Windows and Linux to reduce download size.
•Startup check for critical ES updates. Added support for the server to automatically check for critical EventScripts versions. You can disable this by adding eventscripts_checkforupdates 0 to your autoexec.cfg. (Thanks to Venjax for coding the ES update server.)
NEW Changes in v2.1.1.338:
Fixes:
•Major fixes for event handling in Orangebox (due to Valve's ServerCommand() regression)
◦Resolves GunGame crashes with server_cvar events (e.g. sm_nextmap)
◦Resolves GunGame and WCS problems when using custom events
◦Note: You must leave sv_allow_wait_command at its default value of 1. See Known Issues.
•Fixed es.give(), es.setpos(), es.setang(), es.prop_physics_create(), etc, to execute properly when more than one used per tick
•Created new versions of es.menu and es.dbgmsg to avoid CCommand overrun messages and lost menus
•Configlib misexecution resolved by es.mexec() rewritten in Python and fixed (Thanks to freddukes and SuperDave)
•Resolved odd characters and other problems with usermsg in CS:S (Thanks to XE_ManUp)
•Re-added the EntityProp and other "lost" classes from initial ES2.1
•es_install extraction issues resolved (Thanks to [NATO]Hunter)
•mani_basic_auth support has been added in this release.
•Updated confused help text on many ES commands
Enhancements:
•Includes eXtensible Admin v1.1.0.560 beta with many new features:
forums.eventscripts.com/viewtopic.php?f=97&t=36671 (Thanks to Errant and the entire XA team!)
•Added support for cfg/eventscripts_autoexec.cfg which is run early in EventScripts loading (Warning: Use it only for debugging variables-- cannot load scripts)
•Started highly experimental support for the new ES Shell engine (ESC alpha); eventscripts_shellengine 1 in eventscripts_autoexec.cfg. (Thanks to Chun for coding this project!)
•es.dbgmsg() now supports messages of any length
•eventscripts_sourcesdk_level reports a numeric value for the SourceSDK ES is compiled with (1 for episode1, 2 for OB, 3 for l4d)
•Improved server performance when no Python ticklisteners are loaded
•Reduced EventScripts startup spam
Please report any issues on this thread. Problems reported with small bits of example repro code will get priority for fixes.
We'll be tracking known issues here:
www.eventscripts.com/pages/Known_Issues
Source Taken from evenscripts forums. 
Forum
