The Latest Card Samples are the most recent uploads.
Gallery at Splitcoaststampers
The default is Most Active, but you can also sort by:
Latest
Most Views
Most Popular
Least Popular
Image Name
Title
Yes, you can see what's been uploaded in the last whatever time period(up to 14 days or forever) you choose. The site doesn't track what you've seen and haven't seen. So it's all there. . . waiting for you to sort and surf as you please!
Hope that answers you question.
If not, ask away!