The bigger HW ships might end up in as part of the fall/holiday toy resets, but the 2009 version of the ST line ended up being somewhat of a shelfwarmer with all of the repaints, so I wouldn't be surprised if retailers (except maybe TRU) were to pass on it.
Unless the next two series are re-releases of the important ships from the other 3, I don't think the stores would stock them. That's why I feel that this series they just released is probably going to be the only one released until Star Trek 13. I just don't see them bothering to do any more series of new molds only for online demand.
Ships I meant as important:
- 2009 Enterprise
- TOS Enterprise
- TMP Enterprise
- TNG Enterprise-D
- ENT Enterprise NX-01
- Undamaged Enterprise-A
It's possible that HW might still do them as an online/comic/hobby shop release, as they do sell make and sell higher-end car models that never see the inside of a big box retailer. Since the molds of all of those already exist, there isn't as much investment in repainting/re-releasing them.
But at the same time, if they don't make anything beyond the current wave of four, that wouldn't surprise me at all.