This would of course be wonderful and I don't mean to sound negative but I read it more as the rescue services basically can't confirm anything at all (as they haven't found anything yet) so stated 4 possibilities at this stage.
1 - They have landed somewhere and can't make contact
2 - They landed on water, were picked up and haven't made contact
3 - The made it to a life raft
4 - the plane broke up, leaving them in the sea
This isn't meant to be critical of your post but I read your post as if the rescue services had hinted that they had found something which suggested a life raft appears to have been deployed.
Rule out number two. No chance that happening. Either the ship picking them up would have made a radio call/mobile call