Note: a UI library update means your saved window positions will get reset, and you'll have to dock and/or position them again. Apologies.

Emulation stuff

• Add a config for Master Compact with MOS 5.11i and Arabic ROMs
• Add automatic saving of CMOS/EEPROM contents
• Add emulation of BBC B without ROM board
• Add MMFS support, thanks to Mark Fisher
• Add optional audio low pass filter
• Add SCSI hard disk emulation (compatible with standard Acorn ADFS)
• Fix 1770 FDC issues: fix Watford DDB2/DDB3 double density; fix Watford DDB2 generally
• Fix 65c02 timing issues (fixes Chuckie Egg 2023)
• Fix emulation of write-only I/O registers and empty ROM sockets
• Fix handling of 1 MHz memory regions for Master 128/Compact
• Fix occasional disk fault errors when using Opus Challenger
• Fix video ULA address range
• Improve Video NuLA accuracy

UI stuff

• Add background opacity setting for LEDs popup
• Add optional background economy mode: make b2 use a bit less CPU time when not in focus
• Add option for having the UI use a less pixelly font, which you might prefer
• The GUI Font Size setting has been replaced by a general GUI Scale, now a scale value rather than a pixel size. As a one-off, you'll need to set it up again. Sorry!
• (Linux) Fix rendering issues when running with SDL3's sdl2-compat library rather than SDL2
• (macOS/Windows) Improve retina/high-DPI display support: should look at least a bit nicer
• Improve native file dialogs generally: do a better job with suggested paths, remembering previous folder, and adding file extensions

(If using a high-DPI display with Linux, use the GUI scale to scale everything to taste. It seems to be difficult to auto-detect a sensible value,
so b2 doesn't even try. )

Video stuff

• Add lossless video recording: produces a sequence of uncompressed TGAs and WAV files suitable for later compressing with another tool (e.g., ffmpeg)
• Fix video output aspect ratio
• (macOS/Linux) Improve video autio quality by preferring FLAC (lossless) when available
• (Windows) Improve video audio quality by emitting FLAC (lossless)

Debugger stuff

• Add an error for unrecognised HTTP API query parameters
• Add configurable debugger syntax
• Add initial support for symbols in debugger, thanks to Mark Fisher
• Add support for breakpoints in I/O regions
• Add view of memory-mapped I/O in memory and disassembly dialogs
• Fix debugger's view of ROMs when using BBC B without ROM board
• Fix handling of £ (ASCII 96 in the BBC character set) in the debugger
• Fix possible crash when resizing stack debug window to be as small as possible
• Improve debugger setting persistence (this will be an ongoing effort)

Symbols support is an ongoing work in progress.