Teladoc Health, Inc. shareholders will have a reason to smile today, with the analysts making substantial upgrades to next year's forecasts. The analysts have sharply increased their revenue numbers, with a view that Teladoc Health will make substantially more sales than they'd previously expected. Investor sentiment seems to be improving too, with the share price up 8.3% to US$206 over the past 7 days. It will be interesting to see if this latest upgrade is enough to kickstart further buying interest in the stock.