We created a new Opportunity Type over the weekend and I assumed that it would just magically get added to the Opportunity dataset that the default Wave Sales App builds out but no, the dataflow/dataset was missing all the records related to the new record type. Creating a new dataset showed the data so I knew it was the dataflow somehow.
This is a braindead post to remind folks that if you create a new Opportunity record type and use the Salesforce.com default Wave App that you have to go in and update the dataflow JSON in about 4 places depending on the options you picked when you created the App.
These are the nodes:
I recommend just downloading and updating the sections using a JSON editor like this one.