TL;DR

• FuriHal: new serial API with separate control plane, new module expansion protocol, new configurable serial logging, various bug fixes and improvements
• NFC: DESFire support improvements, new card plugins, various bug fixes and improvements
• Sub-Ghz: new async tx API, new rewritten transceiver control flow, various bug fixes and improvements
• RFID: various bug fixes and improvements
• RPC: reverse input, expansion module extension
• Infrared: new universal remotes
• VA Apps: UI update
• Desktop: fixed unlock from companion on PIN code screen
• Direct Draw apps can now be streamed via RPC

New serial API arrived https://github.com/flipperdevices/flipperzero-firmware/pull/3211 Upcoming JavaScript support discussion: https://github.com/flipperdevices/flipperzero-firmware/pull/3286

What's Changed

• [FL-3727] RPC: reverse input by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3304
• [FL-3429] About: China, Taiwan, and Mexico certification information added by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3318
• HID MFC Plugin by @bettse in https://github.com/flipperdevices/flipperzero-firmware/pull/3312
• mf_classic_dict.nfc updated by @ry4000 in https://github.com/flipperdevices/flipperzero-firmware/pull/3314
• NFC plugin and parser for WashCity cards added by @yaba in https://github.com/flipperdevices/flipperzero-firmware/pull/3319
• Samsung AC remotes DB93 and AR-EH04 added by @braghetto in https://github.com/flipperdevices/flipperzero-firmware/pull/3301
• Scripts: incorrect handling of storage stress test count option fixed by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3321
• MFC emulation fixes by @gornekich in https://github.com/flipperdevices/flipperzero-firmware/pull/3324
• [FL-3678] [FL-3733] [FL-3723] UI refactoring by @RebornedBrain in https://github.com/flipperdevices/flipperzero-firmware/pull/3323
• Desktop: RPC unlock on PIN code screen fix by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3334
• ufbt: generated project paths on Windows fix by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3339
• [FL-3744] [NFC] NTAG success screen freeze when trying to write to unsaved card by @RebornedBrain in https://github.com/flipperdevices/flipperzero-firmware/pull/3354
• NFC: parsers minor clean-up by @Leptopt1los in https://github.com/flipperdevices/flipperzero-firmware/pull/3329
• MyKey production date parsing fixed by @augustozanellato in https://github.com/flipperdevices/flipperzero-firmware/pull/3332
• FuriHal: start duration furi_hal_subghz_async_tx fix by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/3230
• NFC: system dict skip when user dict is skipped fix by @Leptopt1los in https://github.com/flipperdevices/flipperzero-firmware/pull/3356
• assets: checking limits on image size; ufbt: cdb target by @hedger in https://github.com/flipperdevices/flipperzero-firmware/pull/3359
• [FL-3743] Sub-Ghz: UI update by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/3352
• [FL-3678] NFC UI refactoring by @RebornedBrain in https://github.com/flipperdevices/flipperzero-firmware/pull/3361 and https://github.com/flipperdevices/flipperzero-firmware/pull/3369
• Furi_hal_rtc: new function by @Leptopt1los in https://github.com/flipperdevices/flipperzero-firmware/pull/3294
• Sub-Ghz: added subghz tx_from_file CLI cmd, major TX flow refactoring, various improvements and bug fixes by @Skorpionm in https://github.com/flipperdevices/flipperzero-firmware/pull/3302
• FuriHal: UART refactoring by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3211
• FuriHal: interrupt priorities and documentation by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3366
• Bugfix: strip last parity bit from decoded FDX-B data by @lagomorph in https://github.com/flipperdevices/flipperzero-firmware/pull/3199
• [FL-3669] Expansion module protocol by @gsurkov in https://github.com/flipperdevices/flipperzero-firmware/pull/3250
• [FL-3648] Mf DESFire fixes by @gornekich in https://github.com/flipperdevices/flipperzero-firmware/pull/3367
• RFID CLI: improved usability by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/3376
• 0.98.0-rc various fixes by @skotopes in https://github.com/flipperdevices/flipperzero-firmware/pull/3402
• [FL-3759] Fix expansion protocol crash when fed lots of garbage by @gsurkov in https://github.com/flipperdevices/flipperzero-firmware/pull/3409
• Direct Draw apps can now be streamed via RPC by @DrZlo13 in https://github.com/flipperdevices/flipperzero-firmware/pull/3397

New Contributors

• @ry4000 made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/3314
• @yaba made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/3319
• @braghetto made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/3301
• @lagomorph made their first contribution in https://github.com/flipperdevices/flipperzero-firmware/pull/3199

Ongoing

• NFC: new and old protocols support improvements, API finalization
• JS Scripting: VA modules
• Furi & FuriHal improvements and preparation for release version 1.0.0
• Documentation

Full Changelog: https://github.com/flipperdevices/flipperzero-firmware/compare/0.97.1-rc...0.98.3-rc