We are going to see the usual suspects with Switch that we would see with the DS and GBA line, but much much more useful. There will likely be a smaller versions, a version with a full screen taking away the bezel with 1080p resolution undocked (the new default), a NEW Switch like the NEW 3ds line where the processor is better and the system capable of better games.
We may also see other upgrade processes like different controller attachments or just and upgraded body, selling for less money then a whole system. We will see the dock go down in price and other dock options as well. The next console gen for Nintendo may begin a cycle of upgrading "components" rather than upgrading the whole setup. That is until their new industry position is contested strongly or in a chance of decline, in which case we will see something drastically different.
