They included hair accessories as a bonus this month so everyone seems to be getting 7 items.
The prize stuff turned out to be a bust. In your box you should have a card with a code. You can win items in the shop, but most people are getting 10% off a purchase over $50. This is lame because in a few weeks anniversary codes will start working again and you should be able to get 20-25% off $35. Some people on MUT did win a benefits product by entering a contest a few weeks back.
As to box number, I think it appears in your url when you are looking at your box page, but I've never been able to figure it out that way. Normally I just scroll through all the combos. There was a link for that pasted earlier in this thread.
The only other interesting things you missed was something called Beaver Shampoo that appeared in everyone's box a couple of months ago. <_<