Yes, I don't know what to think honestly. I've read with amusement this paper (well, some of the examples, not all because I did not have time to finish it):

https://arxiv.org/abs/2303.12712

It's very optimistic, and alligned with what you say (not an incremental improvement from previous models).

But then, besides the article I shared, I've read this thread:

https://www.reddit.com/r/MachineLearning/comments/124eyso/n_openai_may_have_benchmarked_gpt4s_coding/

So I don't know... Probably we will see soon, when access to GPT-4 is more spread.

Thanks for commenting :)