xTuple ERP 4.9.5 is now available for download from GitHub or SourceForge. This release fixes bugs in Project Types, document associations, and a critical update to credit card processing using Authorize.net. The commercial editions and packages can be downloaded by commercial customers from xTuple.org. See the Release Notes for details. Note that this release requires plv8. See our wiki for installation instructions.
Could you please confirm if upgrading to 4.9.5 is still necessary in order to use Authorize.net after todays announcement ?
Please see our response here: