I think updates will go like this:
Update 2.9: Training rooms, Bromwell, and Rudy (Just in case you missed it)
Update 3.0: Chinese tanks (121 line and FCM 50T)
Update 3.1: Falls Creek Rework and Clan Supply IX (Probably getting IS5 tho), and added Removed Speed Governor provision
Update 3.2: T57 Heavy line (American lights)
Update 3.3: Mines rework and Clan Supply X, and purchasable legendary camo for gold
Update 3.4: Chinese heavies or 2nd Soviet med line or (if T57 line works well), BatChat line
Update 3.5: Credit Earnings nerf, Dead Rail rework or new map
Update 3.6: Waffle (without the waffle, likely Grille 15cm) Line or BatChat line(if it didn't come in 3.4)
Update 3.7: New Map added, and Physics and sound rework
Update 3.8: Chinese heavies, Waffle, or Soviet meds, whichever hasn't been added yet
Update 3.9: Personal missions sets introduced
Update 4.0: Arty and Clan wars (JK, I bet neither will come) French heavies, Waffle, Chinese heavies, or Soviet meds, whichever hasn't arrived
Update 4.1: Getting too hard to predict, so I'm gonna end here
Some extreme speculation going on here. Honestly, by update 4.0, I think most of us here will have quit the game due to some reason or another. Not being pessimistic, just realistic.
Lol, that's true, but I think it would be interesting to see if I were right 10 months into the future.