Release notes for python-bitcoinx: https://github.com/Simplexum/python-bitcointx/blob/master/release-notes.md
python-litecointx release is mainly syncing with python-bitcointx, as the main functionality is there.
The library now has module to handle PSBT and an example of the module usage: : https://github.com/Simplexum/python-bitcointx/blob/master/examples/sign-psbt.py
PSBT should work for litecoin without problems after you switch the chain parameters with with ChainParams(‘litecoin’): or select_chain_params(‘litecoin’).
Both libraries are now fully type-annotated and statically type-checked using mypy. The main code of the library and the examples are checked with –strict option, while the tests are checked with default settings.
A fixed bug in a function that was introduced in python-bitcointx v1.0.0 may have security implications – please see release notes.