SeedSigner v0.7.0
This release is a massive step forward for SeedSigner and had the largest number of dev contributors, ever!
Huge thanks to our volunteer Project Manager: @bitcoinprecept
Highlights:


Reproducible builds: don't trust, verify! You can now confirm for yourself that our release images exactly match our FOSS repos.


Faster Startup: SeedSigner now starts in only 12 seconds (reduced by ~66%).


Faster live camera display: improved framerate makes aiming the camera a much smoother experience.


QR-based message signing: Compatible with Specter Desktop (or any QR code generator/reader app).


SettingsQR Generator: create settings configs that you can instantly scan in to transform your SeedSigner experience. e.g. create a stripped-down, basic noob config that simplifies SeedSigner for demoing to friends but have an advanced expert config for yourself.


More responsive controls and clicks (50% to 100% faster).


On-screen hint for adjusting the QR code display brightness: the primary solution for dealing with low quality webcams.


MicroSD removal hint: gentle reminder for the most careful/paranoid security maxis that you can remove the SD card before loading a seed.


Screenshot generator: We can now generate pixel-perfect screenshots of most screens in the UI. Ideal for including in tutorials, etc.


Flow-based tests: the test suite now includes end-to-end, screen-by-screen scenario tests (e.g. user loads a seed, then scans a psbt, etc). This is a massive improvement for regression testing (does a change break any existing functionality?) and debugging any user-reported errors.


Notable Camera Change:
Camera orientation: default was 0°, now 180°.
SeedSigner builds have evolved to favor the mini Raspberry Pi camera (no daughterboard; components integrated into the ribbon cable). The new default is for these builds.
If your build uses the bigger camera (has a daughterboard; original "Orange Pill" enclosure), you'll need to set camera orientation to 0° with this release.
Notes:

If you are getting value from SeedSigner, please consider donating to our development fund: https://seedsigner.com/donate-now/
Check out our Independent Custody Guide to read more on what our project is all about: https://github.com/SeedSigner/independent_custody_guide

Image Designations:
Four .img files are included in the release; select the one that is appropriate for your Raspberry Pi hardware:

"pi0.img" - For Raspberry Pi Zero v1.3 & Raspberry Pi Zero W
"pi2.img" - For Raspberry Pi 2 Model B
"pi02w.img" - For Raspberry Pi Zero 2 W & Raspberry Pi 3 Model B
"pi4.img" - For Raspberry Pi 4 Model B

Checking your download for integrity and authenticity is super important -- with SeedSigner, you are the software authenticity assurance!
To install on your microSD card:

Download the appropriate .img file
Write the extracted image to a MicroSD card (32MB or larger)
(make sure to use "dd" or a disk-authoring tool like Balena Etcher)
Re-install the memory card in your signer

Full update list:
New Features:

SeedSigner OS reproducible builds and faster boot time (@newtonick) (https://github.com/SeedSigner/seedsigner-os/pull/51)
QR-based message signing (@kdmukai) (#262, #443, #448)
SettingsQR Generator (@kdmukai) (#394, #464 w/@jdlcdl)
Screenshot generator (@kdmukai, @jdlcdl, @easyuxd) (#423)
Public feature development board (@bitcoinprecept)

Improvements:

Faster UI rendering via larger SPIDEV buffer (@newtonick) (#420) and removing numpy dependency (@jdlcdl) (#368)
Faster camera live preview rendering (@kdmukai) (#413)
Speed up initial app launch via optimized module imports (@kdmukai) (#416)
Reminder to remove SD card via toast notification (@kdmukai, @jdlcdl) (#424)
UI hint for adjusting QR code display brightness (@overcat, @kdmukai) (#389)
Default QR code display brightness reduced (@pythcoiner) (#380)
Default camera orientation changed to 180° (@SmokeTag) (#395)
SeedSigner Icons v2 (@easyuxd) (#423)
TextArea consistency/placement (@kdmukai) (#445)
Handle invalid BIP-85 child index (@jdlcdl) (#372)
Handle exceptions which have no message
Limit acceptable QR types depending on context (@kdmukai) (#333)
Modifications to support experimental emulator (not a SeedSigner-controlled repo) (@tadeubas, @enteropositivo) (#345)
More pythonic attribute check (@jdlcdl) (#446)
Remove security-sensitive info from debugging (@conraddonovan16) (#454)
Misc UI tweaks: (@kdmukai) (#461)
Additional SeedSigner OS PRs: (@newtonick, @overcat, @jdlcdl, @Marc-Gee)

Bugfixes:

p2tr spend/change bug (@newtonick) (#351)
Missing class initialization error (@hax0rbana-adam) (#434)
Seed word letter suggestion bug (@overcat) (#371)
Routing fix to Select Diff Seed after psbt signing error (@newtonick) (#451)
Entering image entropy via long click raised exception (@kdmukai) (#453)
Improved exception handling (@jdlcdl) (#370)
Improved BACK button routing (@kdmukai) (#428)
Improved QR scanning error routing (@kdmukai) (#460)
Misc: (@kdmukai) (#348, #433)

Testing:

Flow-based test scenarios (@kdmukai, @newtonick, @jdlcdl) (#339)
Add test coverage reports (@kdmukai) (#342)
Improve embit_utils test coverage (@jdlcdl) (#388)
Proper assert syntax fixes (@conraddonovan16) (#462)

Enclosures

"Rugged Pill" design added (@gobrrrme) (#414)
"Open Pill" notes updated w/comfort joystick option (@bitcoinprecept) (#362)

Documentation:

Updated documentation for the verification of seed generation by dice rolls (@jahangirl) (#403)
Updated release image verification steps for Windows (@Marc-Gee) (#346)
SeedQR specification fixes / clarificaitons (@seedhammer, @bitcoinprecept) (#412, #358)
Misc edits: (@kdmukai, @Marc-Gee) (#347, #402, #406, #407)

Full contributors list
(compiled by @jdlcdl)
@akarve
@bitcoinprecept
@conraddonovan16
@DesobedienteTecnologico
@easyuxd
@EverydayBitcoiner
@gobrrrme
@gpatkinson
@hax0rbana-adam
@hugoender
@jahangir13
@jdlcdl
@kdmukai
@Marc-Gee
@mauricio
@newtonick
@overcat
@scgbckbone
@seedhammer
@SeedSigner
@SmokeTag
@tadeubas
@ValueOverflow