No the Realms have not yet jumped. However the great Alaundo has left us prophesy hinting at possible shark jumping to come.
When the Sage of Shadowdale, the Twin Sworded Dark Elf, and the Half-Elven Swordmaiden fight a three way duel to the death, the shark will have jumped.
When the existence of the previously unknown Eighth Sister is revealed, the shark will have jumped.
When the mage known as Blackstaff adopts a cute and precosious young child, the shark will have jumped.
When Ed of the Greenwood, Lady Elaine of the Cunningham, and the Bard Salvatore no longer spin their tales, but are replaced by talespinners whose tales are dictated by the whim of the counters of beans, the shark will have jumped.
When strangers called Theodore McGinley and Gareth Cole appear and are featured in the tales of the bards as if they had benn there all along, the shark will have jumped.
So sayeth the great Alaundo.