The build 288.1 is available as beta version. The update patch is available in the Download Links post in the "Support Forums / Product Owner's Lounge / Fusion 2.5" forum (or via the Help / Check for update menu in Fusion if you use an older build).
Note: this beta version will be available on Steam tomorrow only.
Be careful with this beta version, make backup copies of your MFA's before loading them with it.
In case of problem you can reinstall the build 288.0 or any other version (no need to uninstall first, just reinstall the patch of the build you want to reinstall).
If any problem with this version, please post it in the bug box, don't post it in this forum otherwise the developers won't see it, thanks!
PS: the CF 2.5 patch updates all the installed exporters, you do not need to reinstall them.