Update README to reflect version change to v0.2.0-beta and highlight power efficiency improvements

Author: desiFish

README.md

@@ -61,18 +61,15 @@
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 ### 🆕 Latest Version
-[**v0.1.3-alpha**](https://github.com/desiFish/ESP32-ePaper-Display-Weather-Clock/releases/tag/v0.1.3-alpha)
-- 🚀 Performance improvements
-- 🔧 Bug fixes
-- ✨ New features
+[**v0.2.0-beta**](https://github.com/desiFish/ESP32-ePaper-Display-Weather-Clock/releases/tag/v0.2.0-beta)
+- 🚀 Power Efficiency improvements 
 
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 ### 🎯 Coming Soon
 - 📱 Web browser integration
 - 🌐 Enhanced weather data
-- ⚡ Power optimizations
 - 🎨 New display layouts
 
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