Well if you're referring to things like CRISPR, I have considerable doubts on the ability of that to do something beneficial that doesn’t cause wild unintended consequences.
As for longevity though, with the nutrition and clean water (relatively for sure) that we have today, absolutely people will be living longer. I think a lot more people may end up in their 100’s and 110’s than we might think. I saw something the other day of a Japanese guy at 87 surfing!
We have better technologies than CRISPR today, which is much more precise when editing genes.
New clinical trials are starting for Brain Simulations that will help treat diseases like seizures, and if they are successful there, they will help treat other neurological diseases like Parkinson's etc.
New clinical trials for targeted cancer treatments.
Longevity and ageing research are picking up steam, and one of the foci is ageing-related diseases.