Shares of Krispy Kreme are hot today after it lifted its 2015 earnings forecast and boosted its share-buyback program after the bell Wednesday. The donut-purveyor now anticipates fiscal 2015 adjusted per share earnings of $.73-$.79. Analysts had been projecting earnings of $.76 per share. Krispy Kreme also ramped up authorization to buy back $80 million worth of its shares, up from $50 million. The guidance makes up for Krispy Kreme missing Q4 earnings estimates on the top and bottom lines.