I didn't see anything on this in the patch list and would like to comment here. Please, Please, Please work on the unit upgrade functions in the next patch. There are too many units in the game that should become obsolete with new technology but an upgrade function is not available. (Longbowmen, Immortals, Frigates, etc...) Also when working on the unit upgrades, Please, Please, Please make it so that untis within an Army can be upgraded.............and you could take a step further with that and put an unload button with armies like ships so you can customize your army as different situations arise.
I especially like the suggestion about upgrading units in armies, and also unloading them after their mission is completed. That would make armies more valuable.
Also would like those obsolescent units to disappear from the build menu.