> Oh wait, will we need to pay to upgrade to ST4?

Maybe not. Depends how/when you bought it, I think. From https://www.sublimehq.com/store/text:

> Personal licenses are a once off purchase, and come with 3 years of updates. After 3 years, an upgrade will be required to receive further updates. One license key is all you need for all your computers and operating systems.

Edit: the site seems to be a bit inconsistent about pricing info. https://www.sublimetext.com/sales_faq says:

> Licenses purchased for Sublime Text 3 do not expire, however an upgrade fee will be required for Sublime Text 4.

Can anyone please clarify what the correct answer is?