Just understand that cryptomining blog is taking sp_ work. sp_ is not posting that on that site. So no I am not surprised. You can go to his official thread and get his updates instead of second hand.
And yes I understand that sp_ and others provide miners and updates without cost but I would not expect an updated Spread for free from him at the beginning.
If you want a list of devs and what they have contributed there is an official site that has all the miners that are out.
But here is the deal not all devs are currently updating miners. Can you point to an optimized miner for Neoscrypt right now? Hint, the algo is owned by AMD right now and if djm34 did not put the time in we still will not have one.