@Mister__Wiggles Ummmmm, I’m not sure that is completely true. The original “Beta Fighter” ones will not be given away again to my knowledge. It’s a possibility that they might do some open beta giveaway for players, but they will be new cards. As @Djiesse said, the beta fighter cases were re-added in this update simply because of a user that has an unopened case on their account and I believe it was causing some problems for their inventory with an invisible case. Correct me if I’m wrong on that issue though Djiesse 
More "bread-crumbs" in the game files.
@Faraleth
Its hard for me to believe that there wont be more with a buying option. The CW cases are the perfect example, those who know nexon know that their rep for that sort of thing. I’ll go out on a limb and say there will be beta fighter cases or similar at one point that people can buy for unique skins and loadouts, I just can’t see how they wont want to cash in on something like that, especially after the CW cases fiasco.
To my knowledge the only cards that have been confirmed never to be seen again are the Founders ones. Until we’re out of Beta, the possibility of new or returning Beta Fighter cards remain, but there is no way to know either way… Even though it has an actual loadout name instead of the generic “Beta Fighter”, the Phoenix Obsidian is for all intent a Beta Fighter card: same card design (including the Beta “B” logo) and same player model and weapon skins.