R5.5 is an additional update, so it will be released to all supporters at once and a week later to the public! But I expect it will be leaked here before that week is over.
And yes, there will be some reworked renders! I am gradually reworking the oldest, worst-looking screens. For example, the new Despina checkpoint:
View attachment 3708036
However, I do it in a limited way so it doesn't hamper the development of the new stuff. I expect to start reworking the R1-R2 smut scenes sometime around R6!