Saw this tweet from Coinbase on 13 July 2018. I was able to get a screenshot of it before it was deleted. Then a new tweet with this image and article appeared.

Image Source
Article
Coinbase is Exploring Cardano, Basic Attention Token, Stellar Lumens, Zcash, and 0x
Tweet

Snapshot from Twitter
Exploring the Addition of New Assets
Today we are announcing that we’re exploring the addition of the following assets to Coinbase: Cardano (ADA), Basic Attention Token (BAT), Stellar Lumens (XLM), Zcash (ZEC) and 0x (ZRX).
Please Note
Please note that we are not guaranteeing the listing of any of these assets. We may list them with partial support, or only in specific jurisdictions. In particular, some assets may become available in other countries before the US.
Public-Facing APIs
Customers may see public-facing APIs and other signs that we are conducting engineering work to support these new assets. We will provide updates to the public about the process and what they can expect via the Coinbase blog and Twitter.
Do Your Own Due Diligence
Coinbase
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The reason I like Coinbase is that they stand up to an over-reaching government: Coinbase Obtains Partial Victory Over IRS, 29 November 2017
Ledger Nano S
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Thank You!
Thank you!