Update what's new pages for 5.14-alpha

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-<h4>Introducing UltiMaker Factor 4 Plus!</h4>
-<p>Factor 4 Plus is supported by a new, field-proven gantry system specifically designed to maintain strict quality standards during continuous, round-the-clock industrial cycles. It is a heavy-duty architecture built to run shift after shift. Industrial-grade hardware optimized for manufacturing and defense. Built for manufacturing, delivering up to twice the productivity of the Factor 4. High-speed printing that never compromises on precision or part accuracy. <a href="https://ultimaker.com/3d-printers/factor-series/ultimaker-factor-4-plus/?utm_source=whatsnew&utm_medium=cura&utm_campaign=513">Learn more about this printer here</a></p>
+<h4>Support painting tool</h4>
+<p>Take complete control over your supports with our new Support Painting feature. You can now customize exactly where supports are placed simply by brushing them directly onto your 3D model. Whether you want to fine-tune auto-generated structures or paint an entirely custom support pattern from scratch, this intuitive tool gives you absolute authority over your print's stability. By targeting only the necessary areas, you can significantly reduce print times, save filament, and ensure cleaner surface finishes upon support removal.</p>

cura/resources/texts/whats_new/1.html

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+<h4>Experimental support for Windows on ARM plaftorms</h4>
+<p>With this release, we are excited to introduce an experimental Cura installer built specifically for Windows on ARM architecture. This preview allows users on ARM-powered devices (such as those running Qualcomm Snapdragon processors) to experience the native Cura workflow and performance. Please note that as an experimental release, you may encounter occasional bugs or performance inconsistencies. We highly encourage our community to test it out and share feedback to help us refine the experience.</p>