Basically the video was just Jágr's response to local media, which have been speculating about his future and with each day / week (that goes without 68 signing) they are becoming more and more "gloom and doom".
Before Jágr said bye (he actually said "čau") he told his fans (fb followers) to look forward to tomorrow. I don't think you tell somebody to look forward to next update if you are going to announce your retirement.
But I am not sure he will come with concrete team. I don't see into JJ's head nor do I have some secret info. Knowing the Czech language (and Jágr) I can at least tell you for sure that the video was just JJ being ironic and making fun of the situation.
Too bad about jagr, but he only cares about the money it seems. He is probably asking for a ton of money and teams are probably not willing to over pay a guy who is 41 years old. He is a good player and brings veteran presence to any team he plays on, it is just that he is not worth the money he is demanding.