They did come out with Gopher 2004, but it's still pretty much an update. Gopher should have skipped the 2004 label and went straight to 2006. If anything for marketing reasons.
Maybe the new version will have more invoice options, like the ability to add address to the remittance stub and change fonts and add fields. I would still like to see some sort of up-selling included. If you ask any veteran how important up-selling is they would all say very important. The first guy interviewed on Gopher radio mentioned the importance of up-selling jobs like aerations. But I have only seen two members (LGF and I) suggest this on the forums, so it probably won't happen.
Non the less I hope they are working on something more advanced for the near future, or many will find this to be just another one of those programs that you eventually grow out of.