If I understand test 3, it actually recycles the "languages inside dropdown" feature that was in test 2. If so, it should say that explicitly, and should probably also say that that aspect would be subject to the results of the second test.
Topic on Talk:Wikipedia.org Portal A/B testing
Actually we won't do that in test 3, we will revert back to the languages by article count display as it currently is on the portal page. Test 4 will be a combination of test 2 and 3. I've updated the wording with this information.
Ok. I confused the new dropdown at the right edge with the earlier proposed new dropdown for the list of languages by article count. Both are a list of languages/projects, but in a different context and with different presentation. Probably fine now. Thanks.