Absolutely!
Once you purchase the asset library, all future updates come at no additional cost.

Yes!

I'm continuously dedicating time to enhance this collection. Currently, there are 70+ assets in development, ready to be added soon.
At present, I have scheduled updates every Sunday, which will include the models I've been able to work on during the preceding week.

Should you require a model with a higher polycount, please reach out to me through Blender Market.
While the library models primarily obtain their detail from the normal map, I can definitely enhance the detail directly on the model for you.

Here is an example for the level of detail on the "Lemon_Half_1" model with 5.2 Million tris:

*Please note, using assets with such a high polycount might potentially cause your projects to become unresponsive, freeze or even crash. I cannot be held accountable for any data loss.