An Amazon listing for Call of Duty: Modern Warfare 2 Remastered has appeared, with a release date of April 30th. As spotted by IGN Italia, listings for both Xbox One and PS4 versions of the game have been added to Amazon Italy, with prices of €19.99 (approximately $25 USD / £17 / $31 AUD).

As with every early listing, this is most likely a placeholder. The listed release date would indicate an unusually small time between announcement and release – for comparison, the original Modern Warfare Remastered saw a six-month gap after being officially revealed.
If this listing proves to be true, it would seem to indicate that this will be a standalone release, rather than a special edition bonus with a new Call of Duty installment.
I still think that Modern Warfare 2 Remastered would launch in 2019 when Infinity Ward will be releasing their COD title as 2018 belongs to Treyarch’s Black Ops 4 and it’d be odd for a Treyarch title to launch with an IW Remaster.
We’ll find out soon enough.