Hello! I’m the Product Manager for EndNote and I wanted to respond to you directly on this.
You’re correct – and I could have phrased that better in the Tweet. The timing is still a question mark and that’s the part we’re still considering rumor, but you’re completely right that the transition itself is not. The good news is we’ve been expecting this and have a lot of the ground work done already. We have a plan and are moving forward as we wait for more concrete timing information from Apple.
Additionally, from what we’ve seen and heard from Apple thus far, 32-bit applications are expected to still open and run. There will be a one-time, dismissable warning that the application should be updated, but it shouldn’t cause much of a workflow interruption. That said, addressing this is a priority for us as soon as possible.
I hope that clarifies! Thanks for reaching out.