I’ll try to clarify again. @rubdos is right that 10 IV and 10 V will receive Sailfish 5 as well. Current free version is 4.6.0.15. However, that does not imply that we would have new vendor blobs – I can almost certainly say that we do not have new vendor blobs at the time when we release Sailfish 5 for all supported devices (early access release).
That said, I do have Xperia 10 V in use with not working fingerprint and camera (also broken battery charge level). Just last week we realized that we have not yet enabled low-memory-killer for 10 IV and 10 V. Threshold values need to be configured as well.
List of supported devices can be found from Supported Devices | Sailfish OS Documentation