Pluggable transports bundles warn of need to upgrade when no new version is yet available
Say there is a TBB and corresponding PT bundle both with version number X.Y.Z-alpha-1. https://check.torproject.org/RecommendedTBBVersions will say:
[
/* ... stable bundles ... */
"X.Y.Z-alpha-1-MacOS",
"X.Y.Z-alpha-1-Windows",
"X.Y.Z-alpha-1-Linux"
]
When the X.Y.Z-alpha-2 TBB is released, the file changes to
[
/* ... stable bundles ... */
"X.Y.Z-alpha-2-MacOS",
"X.Y.Z-alpha-2-Windows",
"X.Y.Z-alpha-2-Linux"
]
If we haven't built new corresponding PT bundles yet, those will still have the old version number X.Y.Z-alpha-1, and users will get a blinking Tor button telling them to upgrade. However no upgrade exists for them yet.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information