I have stated in the Tapatalk 2 thread here that the dev's of Tapatalk have not stopped working on v1 and that Tapatalk 2 is a separate app, here is a quote from of the dev's concerning the matter,
They are really two different app, one is Universal and one is a premium iPhone app, they will be supported for next very long while and development to the original version hasn't been stopped.
They will have different price point too.
Thank you for the feedback so far and we love them!