yes, we will be open-sourcing the hardware, though not in quite the same way as with the OT-One. All the OT-One parts are off the shelf, 3D printed, or laser-cut, so putting all the files on github makes a lot of sense. But the OT-2 is a lot of custom parts injection molded / extruded / CNC'd by our production team in Shenzhen, and it is a lot harder to both share those designs on our end, and to make anything out of them as a hacker. So we'll be releasing a lot of high fidelity CAD files of the full assembly, as well as deeper dive documentation like this whitepaper on our new pipette designs: https://s3.amazonaws.com/opentrons-landing-img/pipettes/OT-2...
sorry if my answer is confusing. the short answer is: yes, there will be more (and more in-depth) open-source documentation of OT-2 than with OT-One, and not just limited to dumping everything in a github repo. This is rolling out in the coming weeks as things get finalized.