No, your job is to write the SDK. Eventually someone will write one and then you can go to the next level.
Note that they have carefully looked for the type of people who will write a sdk for it, and ensured they have a pinetime. Thus in a few months/years I expect to see a couple different SDKs come out. Once there is a useful SDK with a useful app ready for release they will start selling hardware to anyone with it. Until then they will only make the pinetime hardware available to the type of person who is likely to take what currently exists and move it up a level. (note that the first set of hardware has shipped, they might or might not make a second round for more developers)
This thing is slated for possible production in Q1 2020. In the mean time, they are seriously considering producing their pre-production devkits for general availability in the Pine store, as they are rather easy to produce. If you are interested, send them a message. There is more details about PineTime in the latest update: https://www.pine64.org/2019/11/05/brave-heart-edition-pineph...
Also the wiki at the bottom lists the SoC Datasheet, specs, schematics, etc. You might be able to find a similar platform (nrf2840) on alibaba or something. I'll bet the PineTime people can tell you on IRC or Slack.
Note that they have carefully looked for the type of people who will write a sdk for it, and ensured they have a pinetime. Thus in a few months/years I expect to see a couple different SDKs come out. Once there is a useful SDK with a useful app ready for release they will start selling hardware to anyone with it. Until then they will only make the pinetime hardware available to the type of person who is likely to take what currently exists and move it up a level. (note that the first set of hardware has shipped, they might or might not make a second round for more developers)