Post from 11:23 today on the BBC live stream:
In the last few days I’ve spoken to sources in Qatar who are working on negotiations between Israel and Hamas. They said they had been close to a deal on hostages being held in Gaza.One contact said to me they had done all the hard stuff. They were dotting I’s and crossing T’s when Israel started the ground invasion.
Israel’s position is even though there are 240 hostages, they don’t want to give Hamas any sort of impunity or type of reward for what they’ve done.
^^
We’ve heard from Israeli government spokespeople who say force and strength is the only way to get Hamas to release the hostages.
My working assumption at this point is that Netanyahu does not want the hostages released as doing so would weaken justification for the ongoing conflict. That's the only explanation I have for the invasion being launched then, just as, if the BBC report is correct, a deal on the hostages was almost there.