Card Browser Deprecation

Hi Jjpsq  ,
Thanks for reaching out to the Microsoft fabric community forum.

I have tried to look up any information related to timeline of card browser depreciation, but seems like they have not yet published the exact dates yet.

Regarding your question on any alternates for card browser please check out these visuals and check if they are suitable for your needs:

1)  Shielded HTML Viewer:
Visualize your HTML formatted content to add valuable context to your figures.

Shielded HTML Viewer

2) HTML VizCreator Flex by BI Samurai:
 This visual can be used for nearly anything and can be the solution for many things you can't do with the Power BI core visuals.
 HTML VizCreator Flex by BI Samurai

3) Formatted Text Table – LeapLytics:
Markdown Viewer - LeapLytics

4) Document Viewer:
Document Viewer

5) Deneb: Declarative Visualization in Power BI
Business Apps – Microsoft AppSource

6) Power BI Visual Editor
Business Apps – Microsoft AppSource

I hope this information helps. Please do let us know if you have any further queries.
Thank you