diff --git a/README.md b/README.md
index 99598bb19..3ec87b915 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 # TCKRTUIYO - Rainfall Station RTU Web Interface
 
+> **Current Version**: v1 (Flask) - See `src/`
+> **Next Version**: v2 (React) - See `v2/` (in development)
+
 A modern web-based interface for a Base Station/Real-Time Unit (RTU) rainfall monitoring system, designed for a 7" capacitive touchscreen display (1024x600). The system monitors and logs rainfall and related sensors, transmits data to a server, and provides both a kiosk-mode local display and a full HD remote interface.
 
 ## Features
@@ -25,10 +28,16 @@ A modern web-based interface for a Base Station/Real-Time Unit (RTU) rainfall mo
 
 ## Tech Stack
 
+### v1 (Active - Flask)
 - **Backend**: Flask + Flask-SocketIO
 - **Frontend**: Bootstrap 5.3, Socket.IO Client
 - **Python**: 3.x
 
+### v2 (In Development - React)
+- **Frontend**: React 18 + TypeScript + TailwindCSS
+- **Build**: Vite
+- **UI Components**: shadcn/ui
+
 ## Getting Started
 
 ### Prerequisites
@@ -87,22 +96,39 @@ FLASK_DEBUG=1 python src/app.py
 | `/api/files/<filename>` | DELETE | Delete file |
 | `/api/files/export` | POST | Generate tidEDA format |
 
+## Version History
+
+| Version | Description | Date |
+|---------|-------------|------|
+| v1 | Original Flask + Bootstrap interface (archived in `src_v1/`) | Pre-2026 |
+| v2 | React/Next.js interface (in development in `v2/`) | 2026-03 |
+
 ## Project Structure
 
 ```
 .
-├── src/
-│   ├── app.py              # Flask application
+├── src/                     # Currently active Flask v1 application
+├── src_v1/                  # Archived Flask v1 application (backup)
+│   ├── app.py               # Flask application
 │   ├── templates/          # HTML templates
 │   │   ├── dashboard.html  # Main kiosk dashboard
 │   │   ├── settings.html   # Configuration UI
 │   │   ├── calibration.html # Sensor calibration
 │   │   └── files.html      # File management
-│   └── data/
-│       └── logger/         # CSV storage (/myvscada/logger)
-├── requirements.txt        # Python dependencies
-├── README.md              # This file
-└── .planning/             # GSD planning artifacts
+│   ├── static/             # CSS, JS, images
+│   ├── data/               # CSV storage
+│   ├── routes/             # Route handlers
+│   ├── services/           # Business logic
+│   └── requirements.txt    # Python dependencies
+├── v2/                     # NEW: React v2 interface (development)
+│   ├── src/app/            # React application
+│   ├── guidelines/         # Design system
+│   ├── package.json        # Node dependencies
+│   └── vite.config.ts      # Vite config
+├── sample_interface/       # Reference implementation template
+├── requirements.txt        # Current Python dependencies
+├── README.md               # This file
+└── .planning/              # GSD planning artifacts
 ```
 
 ## Kiosk Mode Setup