100G to the server won't be that far away.
On one hand I see a lot of servers are still fine at 1G for the most part and 2.5G would be a good option than power hungry 10G copper. On the other hand I have a few servers that the network usage never drops below 5-7G all day and they could maybe use 10G now.
Back to the topic of course, these large ssd's are perfect (except cost), nearly every server has enough drive bays to house their local datasets easily.