Thank you for letting us know you would like an extension/more time. We do have tight deadlines so I would prefer to use the time in the 2nd part of this challenge. mlodik, adroc and IBM will work to get everyone great checkpoint feedback. We need to deliver this project (and the follow-up tablet/desktop designs) pretty quickly.
Please focus on a "mobile first" thought/mentality and I am looking forward to seeing your submissions. Submit what you can!
(We also have submissions at this point so it doesn't make sense to extend)