Hi Dangeresque55,
There is more about the different types of foundations or platform beds that are generally suitable for different types of mattresses and some sources for each of them in the foundation thread here but both of them sell a wood slatted foundation that would be a good choice for an all latex mattress and in looking at them they may even be the same foundation.
As far as a frame goes … if you are looking for a steel bedframe there is more information in post #10 here that should be helpful. An all latex mattress is heavier than most other types of mattresses so I would tend to choose a heavy duty bedframe under your foundation.
Phoenix