It hasn't halted and it didn't run into "serious issues" (blockers). It just needs its time. It's a small project, so when for instance it has to provide a webshop so people can make their orders, the R&D is pretty much halted from lack of resources as everyone is focused on that. We haven't taken all such non-technical issues properly into account when estimating needed time and it backfires. However, I think it's not that bad overall - there is slow, but steady progress all the time. See the last news from a week ago: http://neo900.org/news/the-neo900-shop-grand-opening-for-pre...

Also, just so you're aware: you cannot "wait to decide", as it's basically built to order and financed almost completely that way. The moment it goes to production you will have to find at least another 200-300 people interested in buying it, so the second production batch will be possible to happen.