That would be nice, but it seems we can only hope for internal updates on the current SE model. I am still using the iPhone 6 (acquired 3 years ago) and I have never liked the fact that it's a much larger phone than I ever had before. But I did not "upgrade" to the SE when it first came out. Now the SE will be 2 years old in Spring 2018, so I am hoping they will at least update the chip inside of it and then I'll upgrade from the 6 to the SE.
I just did this exact thing due to the screen shattering (again) in my iPhone 6. The upgrade from the 6 to the SE has been incredible. A substantial boost in speed, and I can actually use the thing one-handed again. Between buying the SE used and fixing and selling my 6, I only ended up spending like $75. Highly recommend.