The first network model was bad but I think that the 0.9 client already contains the major improvements of the network rewamp (after Korean guys from Frogster Asia came in Netherland to help the one guy working on the network code).
If you know how to bypass Gameguard (or maybe we can analyze the code only statically if it's just to check network code), it would be useful to test the release client version available through Acid's torrent.
 
Edit: Woot, I don't know what I did, just played around by mixing 1.0.0.3 files and 0.9 files, reverted everything but my game has some parts of it now in french oO
Edit²: I guess that the installer from the 1.0.0.3 set some keys in the registry...
Edit3: For those interested, it's here: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Spellborn\The Chronicles of Spellborn\Settings
If the key does not exist, create one called "Language" of type REG_SZ. The value must be "English" or "French" or "German" (did not try Japanese^^). Be just careful because in 0.9 not every strings were translated so you will have a lot of errors in the log and some things not translated.