All MyHeritage users now have the opportunity to enjoy this feature to make instant family history discoveries. All first Discoveries will be free, with subsequent Discoveries requiring a PremiumPlus subscription. Discoveries will always be found and shown to you for free, but applying them to your tree in one click (after the first few Discoveries given for free) is what requires the subscription.
If you already have a PremiumPlus subscription, you'll be able to apply any number of Instant Discoveries you wish with no limits.
NOTE: Due to the technical reasons, Instant Discoveries™ will initially be available only for family trees having 25,000 or fewer individuals. After applying a Discovery, your tree will change, and hence new Discoveries will need to be recalculated. Once the recalculation is complete, which may take between a few seconds to 24 hours, MyHeritage will offer you additional Discoveries.