These are some nice improvements. Thank heavens, there's some useful information on the cards now. I'm surprised to hear Samuel say that information has been available all along. I remember seeing versions without almost no info on the cards very recently. Great to see Samuel out communicating with the wider WordPress world at last.

SINGLE ROW OR TWO DATES

What is really not necessary is the tested with 4.7.3 info. WordPress.org has pushed plugin authors to do automatic checkmarking of older plugin versions so the information doesn't mean much. If you don't do it you're blacklisted (and probably don't even show up in search).

The cards would look better and be easier to read with just plugin author information and number of active installs at the bottom. If any information would help, it would be to add last updated date - more than just checking the "I've tested my plugin with latest WordPress" or even more symmetrical (as if you add one piece of info you may as well pair it in two rows) would be last updated date and date created.

CLICKABLE AUTHOR NAMES

It would really help if the plugin author's name in the search results were clickable as the first thing a responsible WordPress publisher or developer wants to see is the author's track record with other plugins.

PREVIOUS VERSION LANGUAGE

While it's great that previous versions are back, I'm not happy with the language around previous versions.

Previous versions of this plugin may not be secure or stable and are available for testing purposes only.

It's very alarmist. These versions are not just for testing purposes. I'd recommend something more neutral like:

For security reasons, WordPress.org recommends running the latest version of a plugin unless you have good reason not to such as removed features or compatibility.

Or short and sweet:

Older versions may not be secure. Handle with care.

In any case, the word stable should not be here. Why would the earlier versions not be stable?

SECURITY CHECKS | GitHub INTEGRATION

We could then go a bit further and start to mark with red asterisk versions which are known insecure. I know there are quite a few databases of WordPress and plugin security issues we could pull from. That's an additional feature and lots of extra work so I just mention it, I do not recommend it. GitHub integration would be much easier to build and more useful.

LAYOUT: ADVANCED VIEW

The placement of the Advanced View is quite awkward, far away from the developer section. It seems to me it would be much more useful to have a "Stats and Preview Versions" link in the Developer section. Of course that's awkward as the link would be nested under a "Read more" link (tabs were so much more functional an interface for the plugin directory) but at least it would keep all the developer information in one place.