I've done quite a bit of searching, but haven't found much info at all about radios that are in development, releasing in the coming months or 2014. For any given industry there is usually at least one trusted source where such info is aggregated, but I haven't found it yet for amateur equipment.
There really isn't any.
However, a lot of what is "advertised" today isn't even available yet! Anything "brand new" in QST
for example (new rig, advertised for the first time) is likely not yet released, so we know about developments months before the gear is available via that method.
In some cases, "years" before it's really available -- such as the Flex 6700. That was advertised in 2012 and they just started making shipments quite recently.