So, the Redmi K90 Ultra—yeah, that one—has started showing up in leaks even though the other two K90 models barely settled in. It’s still early, and honestly the info feels like it was gathered from the edges rather than the center, but Digital Chat Station dropped a few pieces that give a rough idea of where Xiaomi seems to be heading. Nothing polished yet. Just bits that point toward a bigger, faster version.

One of the first things mentioned is the screen. Apparently: 6.8 inches, LTPS OLED, “1.5K,” and—this part stands out—165 Hz.

That’s the kind of refresh rate that only gaming phones used to get. Now it’s creeping into mainstream-ish lines. The corners might be rounded. The frame might be metal. The description reads like Xiaomi wants the Ultra to feel nicer in the hand than the usual K-series plastic vibe.

Water protection gets a mention too. Not a number though. More like, “it should be more resistant.” You know how leaks are—half of what you want, none of the details.

There’s also something about an ultrasonic fingerprint reader and a better audio system. All believable, but still vague.

The number floating around is close to 8,000 mAh, which is… huge. Even for an Ultra model.

It’s noticeably more than the K90 Pro Max. And more than what Xiaomi usually does with its performance phones. The tipster added some note about a software layer for high frame rate support. Hard to tell how that plays out, but it sounds like Xiaomi wants this phone to keep frame stability when gaming, not just spike for benchmarks.

Inside, the rumor points to a MediaTek Dimensity 9-series chip. Maybe the upcoming Dimensity 9500 Plus. The chip isn’t official yet, so all of this has that half-real, half-forward-looking feel. Camera details? Nothing. Just that the Ultra is meant to lean toward performance rather than trying to outperform everything in photography.

Looking at Xiaomi’s recent patterns, especially with the K80 Ultra landing mid-2025, the K90 Ultra could be a mid-2026 phone. Maybe earlier, maybe not. And there’s the usual whisper that Xiaomi might rework it into a global model later, though that depends on the company’s mood at the time.

For now, this is where things stand: a bigger battery, faster screen, sturdier build—just enough to sketch out the Ultra, not enough to finish the drawing.