Well folks, according to Nathan, we know that actual patch windows are Tuesdays and Thursdays, with hotfix windows being maybe Wednesdays (assumption based on the fact that keeping patching and hotfix windows symmetrical makes sense....which means it's probably wrong) and definitely Fridays. Given their track record of over-promising and under-delivering on patches, I automatically assume that any concrete date given is wishful thinking and adjust it by +2 days to start. Therefore, my money would be on Thursday if I were a betting man.
They say not a lot of people read the forums, so probably expect a steam notes on patch notes soonish.
OMG this patch is so suck. In short - all that was f ridiculously broken for orks is still fucking broken. All that was working now is nerfed. Rejoice!