Have a 2 - I don't see anything exciting about the 3. (I wouldn't care if they removed the notch and the chin - they don't bother me.) So ... no.
Maybe the 4 - if it comes with something I really want. (I went for the 2 for the fingerprint scanner - then was the only one to find the fingerprint bug in Android, so I still have a phone I can't use fingerprints on. That's okay, though - between me and the development team, we may be narrowing in on the cause. The next email I get from the team should five me what I need to provide him with a dump that might do it. [It was up to "can you flash a ROM?" Friday. Duh! If you don't want to remove TWRP every time, that's how you update. Ask me to do something difficult, like get out of my chair.)
We'll see how it goes. Once this is fixed, I was planning on keeping the 2 until at least S came out (which the 2 won't get). But if they come out with some other nifty hardware - a mind-reading module, maybe? - I might buy a new one before then. The 2 still has the best camera on the market, and they're not doing any work on the HDR chip that I know of, so the 3 won't get any better. (Open Camera even supports HDR.)