These three episodes were produced but were not purchased by Fox.
There was an AP wire story on VR5 a few weeks ago which said that FOX was only committed to nine eps of VR5, but the production company did 13 so it would be an easier sale to foreign television. According to the article, if VR5 was cancelled (as it was), the three eps would remain unseen here.
Here's a quote from the AP piece:
"The episodes were shot after [John Sacret] Young refused a six-episode deal, Fox counteroffered nine and Young's partners decided to make 13 episodes for international packaging. Fox's 10th episode, the season-ending cliff-hanger, airs May 12."