Coinbase and GDAX have adopted SegWit, which means that all their users will soon have an opportunity to enjoy lower fees and faster Bitcoin transactions.
Bitfinex and Coinbase now support SegWit. Bitcoin investors can expect to see lower fees and faster processing times, but please remember that SegWit has been implemented for Bitcoin only, and not Bitcoin Cash.
The US largest cryptocurrency exchange, has made several important announcements in its latest blog post, mostly regarding PayPal withdrawals and accepting new US credit cards.
In a few weeks, Coinbase will offer their customers an update on Bitcoin SegWit which is expected to improve transaction capacity of the Bitcoin network.