I don't know your situation so I can't say if you should have waited or not but if I were in your shoes I would definitely wait sep/oct as that is when Apple wakes up and does something. Its always WWDC, Sep/Oct and sometimes around march. So there is no way I would buy anything between these unless it was something that was just recently refreshed.I did consider it. But rumors are rumors and I didn't want to return it only for the 16" to not materialize.
We'll see how much it costs, I wouldn't have wanted to spend a lot more just for that 1".
Of course, if you really needed it then it doesn't matter now so enjoy it and forget about it.