Here's part of the .txt file in the .339 release...
Emerald 2.5 Updates and Changes
-------------------------------
v2.5.339 - 9/15/00
* The PC Transact_IT format was changed to a generic CSV batch out
  of Emerald, and not includes batch in support.  You will need to
  obtain the definition file and re-configure the out file for this
  to work.
* Printing the radlogs report with a Database not named Emerald would
  display an error (new ralogs.rpt). (RQST00000008826)
* Line items totals which included a tax in the emailed invoices were 
  not displayed correctly, although the invoice total was correct.
  (RQST00000008780)
* If you have Restrict client reports enabled, the auto-batch could
  not find the global reports.
* Adding or changing the home directory of an existing service will
  now cause Emerald to create the new directory. (RQST00000008862)
* Customers who had an unapplied charge could cause the SQL
connections
  to block each other and hang the invoice creation. (RQST00000008834,
  RQST00000008891)
* Deleting an operator in the Emerald Admin required hitting delete
  twice. (RQST00000008732)
* Added Support for X-Stop Class definition in the Emerald Admin.
* Taxes with an accumulative floor definition where not being cleared 
  between customers.  Floor definitions were not tracking per month
  correctly (ie, monthly floor, not pay period floor). 
  (RQST00000008655, RQST00000008705)
* Taxes for charges are not calculated until applied to an invoice,
  to allow for accumulative floor definitions to turn our correctly
  for pro-rate and setup charges. (RQST00000008655, RQST00000008705)
* The billing engine now uses a blocking SQL connection when creating
  invoices.  This can cause a slight pause in the display update, but 
  offers a 50 times performance advtange with the DB-lib interface.
* Added support for Telecheck EFT batch out.
For more information about this list (including removal) go to:
http://www.iea-software.com/support/maillists/liststart