Please correct me if I am wrong, technically speaking, there has been no change for us whatsoever.
The DMCA has been around since 199. The exception regarding jailbreaking specifically targets smartphones. Tablets (of e-readers, if you consider them tablets) were never part of the exception. Rooting tablets has always been a DMCA violation - if copyrighted code was used and shared. To me, things are as they were yesterday, and the day before that.