From a search in the game code several details of the Call of Duty: Modern Warfare Season 1 Battle Pass emerge, with information on tiers, weapons and more.
The Battle of the Pass Season 1 of Call of Duty: Modern Warfare has transpired in almost complete form thanks to research carried out by a DataMiner, which has found in the game’s code references and all the features of the upcoming events. Therefore,
after the appearance of the almost complete list of the free contents of the Season 1 of Call of Duty: Modern Warfare, we can also have a precise idea of what the Battle Pass of the same initial season will have to offer for the Activision game, which will begin December 3, 2019.
The data was collected by the Senescallo dataminer, who now has some experience with regard to this kind of thing and in particular applied to Call of Duty: Modern Warfare. Apparently, Season 1 will start on December 3rd at 10 am PST (7.00 pm in our country) and will end on January 28th, 2020, with tier, boosts that could be purchased apparently in increments of 1, 2, 5, 10, 20, 50 and 100. There are 104 tiers for the Battle Pass of the first season and the first four are awarded immediately to those who purchase the Pass.
The rest of the tiers should include 77 exclusive levels for those who buy the Battle Pass, while the other 23 will be free and available to everyone. The Battle Pass also contains two new weapons: Holger-26 and Ram-7, both of which will be available to all players for free, and the first can be unlocked on tier 15 and the second on tier 31.
It also appears that Skin Operators also and almost all projects will still be exclusively linked to the paid version of the Battle Pass. In any case, all this information is still to be taken as unofficial rumors while awaiting communications from Activision.