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Calibre's big update, the new Raspberry Pi OS alternative, and more Proton games: Linux news roundup

This was another big week in the Linux ecosystem, with major updates going out for DietPi, the Calibre eBook manager, and the MAME emulator, among other exciting news. Here are the biggest stories you ...
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Calibre 9.5 makes the open-source ebook manager even better

The sixth major update for Calibre so far in 2026.