Barnes & Noble announced the new model of its basic Nook eReader today. In place of the rather heavy two-screen first gen nook, the new model uses a touchscreen and is thinner and lighter (and probably much cheaper to produce) than the original. The new Nook does its wireless using wifi only, replacing the more costly 3G service on the original Nook. The price is unchanged at $139 (unsold first gen Nooks are available for $119).
The new Nook is a little wider and heavier than the new Kobo eReader, but otherwise the specs of eReaders are starting to line up pretty closely. I guess this is the sign of a mature market-- like when cars all started using steering wheels instead of the occasional tiller.