According to the Zojirushi website, they have just brought out a new type of rice cooker. Its name is the Umami™ Micom Rice Cooker. The NS-YAC10 is a 5 1/2 cup unit and it also comes in a larger 10 cup size, the Zojirushi NS-YAC18. These are the only two Zojirushi devices that currently come with the Umami setting. This works by soaking and steaming the rice for longer which apparently ensures an enhanced flavor. The machine also has has a Slow Cook function which simply means that this unit is a bit more versatile than most other Zojirushi rice cookers.
This model was released in March 2011. Just looking at the features that this machine has, it seems like a cross between the Zojirushi NS-ZCC10 and their more expensive Induction Heating range of rice cookers. That said, the NS-YAC10 does not have an Induction Heating component so this machine will likely fall in the $200 to $250 price range. It will not cost as much as the Zojirushi NP-HBC10 but it will be more expensive than the NS-ZCC10.
As with the NS-ZCC10 unit, the NS-YAC10 also makes use of Advanced Micom Fuzzy logic technology. It is also the only non-Induction Heating model to offer a GABA brown rice option. So for this setting alone, it may be an attractive purchase for you, particularly if you are wanting to feed your family the most nutritious brown rice.
The umami option may see like a bit of a gimmick but in actual fact, this is a one of the five basic tastes. You can read more about it on Wikipedia. To be honest, I am not so keen on the fact that Zojirushi have trademarked a word, originally from Japanese, but now part of the English language.
In addition to the umami and GABA brown cooking cycles, there is also the slow cooker setting. These three options on top of all the standard options make this particular rice cooker one of the most versatile units in the entire Zojirushi range. As far as value for money goes, it looks like this unit will supersede the Zojirushi NS-ZCC10 as the best rice cooker without Induction Heating technology.
When it is officially released, you should be able to find the best price Zojirushi NS-YAC10 on Amazon. This is the best place to look for discount rice cookers in the United States.