Supercell appears to be readying a new update for Clash of Clans.
Earlier today, the developer warned players that Wizard Time — a period of time in which Wizard training and cost were reduced — is almost over. In fact, they'll be ending with the next update.
We don't know exactly when the next update is hitting, but typically Supercell spends a week or so teasing new features and changes. Assuming they stick to this tradition, it's possible we'll start seeing sneak peeks for the new update as early as this week.