Publisher 360 is a Tech Preview you can find on Autodesk Labs. It is a TP that you have to sign up for to receive access. Worst case, take a look at this video to get a quick understanding of what Publisher 360 is all about.
[pay special attention to the email that is composed during the video...]
Against their better judgement, the Publisher 360 team decided to let me try it out. It couldn't have been easier...since it is tied to my Autodesk ID and Autodesk 360 account. I just had to go to the Publisher 360 page and sign in.
Right off the bat, Publisher 360 is linked to your Autodesk 360 account. So, you can bring in any dwf, dwg, ipt or iam files you have in Autodesk 360.
A lot of the Inventor Publisher functionality you may be familiar with is built into Publisher 360. I was quickly able to add Snapshots and Storyboards along with Auto-exploding the model, changing Appearance Settings and reviewing the new Device Capacity Meter. This is really great stuff.
The files (.ipb) that you create in Publisher 360 can be saved directly in your Autodesk 360 account...and then shared with whomever you wish.
Once it is saved in Autodesk 360, you have the ability to access and edit it directly from within Autodesk 360.
What Publisher 360 creates today is a .INSTRUCTION file. you can share this file via Autodesk 360 for design reviews, collaboration sessions, etc.
Feel free to look at this one here. Example
Publisher 360 is easy to use, and pretty slick. I have ran it in IE, Chrome and Firefox...yeah, I like to nerd out on this stuff. Case in point: I verified that it doesn't work on the Chrome browser for iPad.
So, go sign up for the Publisher 360 Tech Preview, create some instructions and share them with your freinds, family and co-workers...I'd like to see them too.