4D 6.7 for Mac OS X will be free to all 4D 6.7 customers.
Developer 4D UK is providing a native Mac OS X upgrade version of its database-development software 4D 6.7 to all registered owners of 4D 6.7.
Rob Wylie, 4D UK's general manager, said: "As soon as our Mac OS X compatible products are available, 4D 6.7 applications on existing Mac OS versions will run natively on Mac OS X without modification."
Three versions of the software are available. The 4D Standard version costs £195, the Developer Edition 6.7 is £495, while 4D's Server 6.7 is priced at £595.