Coinbase Pro just announced that XRP will be added. The announcement was made via this tweet:

When XRP?? Now! XRP/USD, XRP/EUR, and XRP/BTC order books will soon enter transfer-only mode, accepting inbound transfers of XRP in supported regions. Orders cannot be placed or filled. Order books will be in transfer-only mode for a minimum of 12 hours. https://t.co/MWUtUm4wRh — Coinbase Pro (@CoinbasePro) February 25, 2019

According to the tweet, inbound transfers would only be available in select regions. The blog post which the tweet linked to states the following:

Support for XRP will initially be available for Coinbase Pro users in the US (excluding NY), UK, supported European Union member nations, Canada, Singapore, and Australia. Additional jurisdictions may be added at a later date.

Inbound transfers began at 10am this morning. After a period of 12 hours, full trading will be enabled.

The release will be unveiled in four stages:

Transfer-only. Starting after 10am PT on Feb. 25, customers will be able to transfer XRP into their Coinbase Pro account. Customers will not yet be able to place orders and no orders will be filled on these order books. Order books will be in transfer-only mode for at least 12 hours. Post-only. In the second stage, customers can post limit orders but there will be no matches (completed orders). Order books will be in post-only mode for a minimum of one minute. Limit-only. In the third stage, limit orders will start matching but customers are unable to submit market orders. Order books will be in limit-only mode for a minimum of ten minutes. Full trading. In the final stage, full trading services will be available, including limit, market, and stop orders.

The push for the addition of Ripple’s XRP to the platform has been months in the making.