Relax everyone. Evolv never sold DNA75C with Replay as a feature. We're getting it as an added benefit. It will be ready when it's ready. If they were worried about it affecting 250C sales they wouldn't have announced the availability of the feature on the 75C preemptively. Having said that, I cant wait to try it and I certainly don't plan on ever buying a large device like the 250C to try it.
Also, while Apple isn't perfect, just contemplate on the fact that iPhones go at least 4-5 of continuous updates, while most of the Android devices out there are still running the stock Android version they were sold with after 4-5 years.