JordanCClark’s post is accurate.
If you absolutely must go along with XP a bit longer, I’d point out that Ignition 7.5 is a LTS version, and will be supported through 2017 for critical fixes, and runs on Java 6. Ignition 7.6 isn’t LTS, but it also only requires Java 6. Both version are available in the archived downloads section.
Regards,