I'll be leaving for General Assembly on Wednesday, and I like to pack early. Some will be leaving early for professional development events, so I'll note this resource now.
Shrunken carry-on sizes will make packing a bigger challenge, and this after I invested a bundle on a buy-it-once bag. That and I hurt my back earlier this year and don't want to risk a repeat.
But if I don't overstuff it will fit -- 9 inches wide! -- and the maker's site has various suggested directions for packing. (And I really, really like my Air Boss Red Oxx bag.)
This may help you.
Packing for Air Travel: One Bag Part 2