This is our new "organizer pocket" option. It's got 3 pen slots and two slots for pda's/ipods/whatever, and it's a $10 add-on.
This is our new "FBI pocket" option. That stands for "flat back inside". It sits on the rear interior wall and spans the whole width of the bag. The closure velcro also spans the whole width for strength. This pocket is great for storing laptop sleeves in our larger model bags. It's a $15 add-on.
Although neither of these show up on the website - we're in the middle of doing an entirely new website, complete with a real live "build your bag" interface - they are indeed available for ordering on custom bags right now.