I would like to know this, too!
I am not sure what is going on with the site except there was a death in the family and there has not been much communication in awhile. Several members have stepped in to do what they can. Here are the posts I thought might be of help to you. I found them by checking out the Leaderboards link
We haven't had any official word from Mena about the status of SW, but I know last year was really busy for her. There is still a group that posts in the community, but there are no new challenges this year (yet). If you want to use last year's challenges they can be found here: http://circle.sewweekly.com/forum/topics/last-years-challenges and Kat posted a list of other sewing challenges/sew-alongs going on this year here: http://macskakat.wordpress.com/upcoming-sewing-challenges
Reply by Stacey on February 2, 2013 at 8:43pm
If you check out this post it lets you know whats going on.
Thanks again for it Tempest.