Hi hpete,
They did email me two days ago but it was only to say that they are “finalizing the details” and will be giving me a call. I am as disappointed as I’m sure the members here are that would otherwise be considering them and I hope that the information that they end up providing is worth the wait and the frustration.
You can compare the quality of the layers in any mattress to the guidelines here and as you can see 4 lb memory foam would certainly be a suitable density for most people (although I would tend to minimize the use of 4 lb memory foam with higher weight ranges). I would also keep in mind that other memory foam mattresses that are the same thickness may feel very different depending on the specifics of the materials and components inside them.
In any case … it is certainly a good quality/value choice and I hope you have the chance to share your feedback when you receive it and that it works out the way you hoped for.
Congratulations on your new mattress
Phoenix