It would not surprise me if TT changes the map system completely.
Reason is pretyy simple:
Right now not only the NC10+ map updates come as hash secured updates, but the maps for official Works customers are delivered in a similar way.
Same for the corresponding Navcores.
TT knows as son as you use your device with Home if you have an official or unsupported Navcore installed.
The contents of ttgo.bif, .bak and ori are transfered as well as the installed map(s) and additional voices.
Most obvious choice would be to either delete non genuine maps/Navcores when connecting to Home or to block the TT account for the user/device.
The server security was upped to prevent the illegal downloads of maps already.
All it takes would be a necessary update to support the next map generation - and it is no real problem for TT to change the bootloader and use the same encrypted system used on Carminat Live for example.
Let's hope TT still values our support and beta testing for them so they won't stop ud completely