16 minutes ago, Hidatom said:"it will be available sometime in the future" is not a good policy.
I agree, but I can see why they might do it. It allows a larger variety of upgrades to be put out earlier in the game's life. I hope that if Column Tactics isn't released in the first wave of Daqan expansions, it will be in the next one, rather than having gaps of many waves between when factions have access to different cards.
But @WWHSD makes a good point about the units that can use it. Oathsworn are really the only existing unit it would make sense to put this upgrade on, and even then, it is only one formation size. If the Oathsworn pack was designed before the Elf Expansion, then the card might not have been finalized by then so it isn't in the Oathsworn Cavalry Expansion, but then when would they put in Column Tactics? What if there isn't a columnar unit being released for Daqan in the near future? Do they include Column Tactics in the expansion anyway just so Daqan players have access to that card? But then in the future, what if a Daqan unit comes out that does make good use of Column Tactics? Suddenly, you have to buy two other expansions just to get that card for the new unit. Am I making sense? It seems convoluted.