Booknet Canada is announcing the retirement of two of its ONIX converters - the Bronze Template Excel-to-ONIX converter, and the ONIX 2.1-3.0 converter.
Their reasoning is below:
Creating ONIX files from the Bronze Template is no longer a sufficient solution for today's metadata needs. It doesn't provide support for full and complete book data (for example, spreadsheets can't be used to manage images), and the industry as a whole should be entirely reliant on ONIX. The spreadsheet template and converter just aren't cutting it anymore. It's time to invest in a database – either in-house or through a third party.
And while ONIX 2.1 continues to be widely used in North America, support for it has ceased and use of the ONIX 2.1 to 3.0 converter has been declining steadily. It is also no longer required for our ONIX education program. ONIX 3.0 is the way to go!
See their announcement here. The takeaway here is that we're moving to an ONIX 3.0 world, and reliance on 2.1 (or 2.0!) is probably not wise.