I understand. But it won't be out for a while. You'll just have to wait patiently. Nobody else has PM for MCBE 1.10 either.
I was talking to this guy who told me to.uldate my server... I told him i cpuldn't because Pocketmine for MCBE 1.10 wasn't out yet... Which he said he already had and that he was gonna send me the link... But he never did because it oesn't exist. Funny
Actually, in the picture it said that the server was running PM version 1.0.0 for version 1.8 of the game. That being said, it's possible they may have been using a plugin, or modified the version and protocol values themselves (highly not recommended). What version of the game were you running at the time? There could've been a custom texture pack based on the new one used.