While the game itself seems solid enough to me, it all depends on how WotC handles it. They really didn't manage 4e very well, and they still don't seem to be doing that good a job with 5e. They really need to get themselves some proper PR.
Yeah, I think it's too early to tell.
I have a feeling it will be a solid game due to the talent that's writing it, but WotC's corporate machine is the issue.
Will the books be packed with info (and a great value), or will they be full of large type and whitespace?
Will the support products be well received?
Will the support products be reasonably priced?
Will the support products be sufficiently varied to allow for a range of playstyles? (Without an open license, this will be more difficult, but not impossible.)
Will the electronic tools be ready at launch, or soon enough after to appease fans?
Out of the gate, I expect good results due to the power of the brand. After that, we'll see.....