Im gonna say... no.
Realistically, how much improvement has this frame seen over 5 years? Maybe 1 iteration?
Yeahyeahyeah, I know all the manufacturers say their new model bike is SOOOOOO much lighter, stiffer, aero, blablabla. But realistically, we are talking what? 5% here, 5% there? The manufacturing, design, engineering, etc. of carbon fiber frames has not seen dramatic improvements in the last 5 years. The rest is all marketing.
I would say: if you want DI2, just buy the groupset at your 60% discount.
Be honest with yourself: do you just want a new bike, just because? Then go for it. But dont fool yourself that it is a major "upgrade" over your current frame.