Yup. It's the City Singles you buy in a booklet that are going:
"Adult City Single tickets to be discontinued
Tickets no longer valid from 1 May 2016
Lothian Buses Adult CITYSINGLEtickets are to be discontinued.
With effect from Sunday 1 May, adult City Single paper tickets will no longer be accepted for travel and there will be no further sales of the these tickets after Tuesday 16th February.
Child CITYSINGLEtickets will continue to be sold.
Single fares will still be available to purchase in advance on a citysmart card or through the m-ticket app. Customers can also still pay for a single ticket when they board the bus.
If you have any unused Adult CITYSINGLEtickets you have three options:
1.Simply use your tickets before 1 May 2016
2.Transfer your tickets onto a citysmart card or to m-tickets on the app.
3.Return your unused tickets for a refund.
For an exchange or refund, please visit any Travelshop with your unused tickets by 31 October 2016."
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You will now need to get a smartcard, which you preload with a minimum of 20 journeys (£30). After that, you can update with a minimum of 5 journeys. For some reason I can't fathom, reloading is only available in a small number of multiples of 5. How difficult can it be to add any number you want