What does historic China-Taiwan meeting signify?

The landmark meeting between the leaders of China and Taiwan over the weekend will likely be remembered as a moment of recognition of new realities and the inevitability of history.
At a time of heightened (though still largey symbolic, IMHO) tensions over the South China Sea and unease over China's growing ascendancy in the region, this icebreaker between Xi Jinping and Ma Ying-jeou is a big positive for the world in its telegraphing of mutual flexibility in dealing with longstanding differences, with an outlook towards the future instead of dwelling on the past.
The heads of the Communist and Nationalist parties are affirming that whatever the lingering differences and enmity between them, that this is ultimately an internal Chinese affair. Their common opponent now is that sentiment on Taiwan - particularly strong at this juncture in its history - that the island's ultimate destiny can be something other than determined by its relationship with the mainland.
Only time will tell...the ideal scenario has always been that Taiwan would peacefully reconquer the mainland with its superior governance and institutions. But that is for the people of Taiwan to decide...may they find their calling in their leadership of the ultimate integration and reunification of China, whether as a Westphalian political entity or perhaps something looser, as the winds of 21st century history dictate.