So Riot when are you going to fix Twitches Stealth and bring it into the modern era?

Twitch stealth was modernizes when stealth was divided into two categories, invisible and camouflage.

Twitch was placed in the category of camouflage champions, making him invisible unless he enters the vision range of a red ward, a turret or a champion enters a certain range near twitch's vicinity.

Believe me when I say this was an actual nerf to his q as it was once used to escape an enemy's engage rather effectively. Now he can only escape enemies preemptively with it or use it as a primary engage as he has no escapes, no mobility, and no hard CC.

He is among the oldest champions in the game who received very minor tweaks over the course of league history.

I still remember when his ult was called Ratatatat and his E was called Expunge.

Evelynn doesn't unless she cast's w. Kha'Zix has no warning but it's shorter range. Shaco also has none.

What do you mean by that? Giving you the warning or other players?

It has been updated.

Rengar is the only champion with camouflage that gives you a warning.

Evelynn only gives a warning if she casts W on someone.

Twitch doesn't have anything he can do in camouflage without breaking it.

Camouflage is one of the two types of invisibilities in the game. Camouflage hides targets from champions a certain distance away from them, but the can be seen by Control Wards.

Stealth, the other form of invisibility can not be detected by nearby champion of Control Wards.

Camouflage is long term invisibility.

Stealth is short term invisibility.