I'm displaying an overview table of items. The items have a:

• category
• a date
• additional, domain-specific information that needs to be displayed in the same view

On the overview list, only one item is shown per category. The most interesting, from the user's point of view, is an item in a given category that has the latest date, but no later than the current date.

For example, suppose that today is 2015-08-26. We have the following items, the most user-relevant ones are bolded:

• Item 1, Category A, 2015-04-12
• Item 2, Category A, 2015-06-30
• Item 3, Category B, 2015-07-12
• Item 4, Category B, 2016-11-15

However, it is also important that the user is made aware of items with dates in the future.

Two ideas that come in to mind are either:

• provide a filter view for showing "future" items.

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• or mark categories with "future" items in some way (including a relevant mouseover).

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None of these feel perfect, however.

So, what would be the optimum way to present such data, given the two constraints (temporal relevance, and presence of "future" items)?