Following up on the succesful release of Server Patch 1 for BG2 2.0 built for windows, a version for Linux server is available now. Server admins can get it here:
http://www.acc.umu.se/~tjoppen/files/bg2/bg2-2.0-serverpatch_linux.zip
For the detailed changes and more information, see the release announcement of SP1 for windows servers here.