I think people should calm down and wait to see what's announced. If it is simply the DUP agreeing not to vote against the Queen's speech or other key votes, but goes short of any formal alliance (which I think is the likely outcome), then there's no need I think for people to be throwing their toys out of the cot.
Even Jerry Adams was moderate with his words, saying he didn't think that it would be good for Northen Ireland and that "any deal which undercuts the Good Friday agreement has to be opposed by progressives". You might reasonably have expected to be MUCH more vehement in his language if the worst fears of some on here are to be believed.
Let's wait and see what develops. If it truly is a dreadful deal, then perhaps the Queens speech will not be supported. We'll see.