I understand clearly what you are talking about. The change has really taken the ease out of keeping track. To the right of your dashboard page you will see "Sort by downloads" or "Sort by date". If you see "Sort by date" the images at the top are the ones you most recently upload. If you see "Sort by download" click on the small down arrow and select "Sort by date".
If you believe you might miss on a few images that you might for some reason process long after uploading, you may create a collection. Go to "Sort by date". Click on more than the accepted amount, or all the image on the first page and add it to the collection (Each page has 99 or 100 files). All the images that falls at the end of the collection are new and is sorted according to how you add them to the collection. Therefore if you add a horse, dog, and donkey (in that order) yesterday, they'll fall below what you have already added regardless of what date you upload the files. If today you add carrot, bread, and biscuits, those will fall below the donkey.
I hope this helps.