Metro Exodus an Epic Store Exclusive - What This Means for Steam Preorders

An announcement from Deep Silver on Steam reveals that Metro Exodus will be a timed exclusive for the Epic Games Store until February 14, 2020, one year after the planned February 15, 2019 release of 4A Games' first-person shooter sequel. The wrinkle with this plan is that Metro Exodus remains available for pre-purchase on Steam for the moment, and has already been preordered there by a number of customers. Preorders will end at some point today, but word is everyone that they will receive their game as expected. This is not preventing Valve from complaining about this, as they say: "We think the decision to remove the game is unfair to Steam customers, especially after a long pre-sale period. We apologize to Steam customers that were expecting it to be available for sale through the February 15th release date, but we were only recently informed of the decision and given limited time to let everyone know." Here's Deep Silver's take on the topic:
Epic Games and Deep Silver today announced a partnership that will see the digitally-distributed PC version of the highly anticipated Metro Exodus release on February 15th 2019 solely through the Epic Games store.

The ability to purchase / pre-order from Steam will soon be removed

However, any customer with an outstanding pre-order for Metro Exodus on PC through Steam will receive their game as expected.

For more information, please view our FAQ below :

I already pre-ordered Metro Exodus on Steam. What happens to my order?
Your pre-order on Steam will be honored, and you will be able to download and play Metro Exodus on release day (15th February 2019).

If I pre-ordered the Gold Edition on Steam, will I still get my future Expansion Pass on Steam?
Yes, your Expansion Pack content will become available for download via Steam, when released.

Will I still get my pre-order bonuses - the Digital Artbook and Official Soundtrack on Steam?
Yes, your pre-order bonuses will be honored and delivered by Steam.

I ordered the Standard Edition - will I be able to purchase the Expansion Pass in the future on Steam?
Yes, if you own the Standard Edition on Steam, you will be able to purchase the Expansion Pass or standalone DLC on Steam when it releases in the future.

Does the Epic Store have any exclusive or timed exclusive DLC?
No. All future DLC for Metro Exodus will be released simultaneously on all platforms.

Are there any differences in content between the version on the Epic Games store and the version on Steam?
No, they have the same pre-order bonuses and in-game content. All future title updates, patches, and free and premium DLC will be released simultaneously across both versions.

Will Metro Exodus ever return to Steam?
Yes - Metro Exodus will return to Steam and on other store fronts after 14th February 2020.