Well this is interesting — the Garmin nuvi 140T and 150T have shown up on the company’s US website. Recently announced for Europe, the 140T and 150T have a built-in TMC traffic receiver and are not dependent upon one integrated into the power cable.
Basically, these appear to be nuvi 40 and nuvi 50 models with lifetime traffic. This would complete the 2012 Essential series lineup with base nuvi 40 and 50 models, the 40LM and 50LM with lifetime map updates and the 140T and 150T with lifetime traffic. Of course if you want lifetime maps AND traffic in the 2012 line, you’ll have to move up to Advanced series models like the 2455LMT or 2555LMT. There is no official word yet nor pricing info, but I suspect we will see these stateside in time for Black Friday.