Thank you for looking to add Beehive Newsletter native integration, from my previous question!

Hi - I have an older Tier 3, but thinking of going Tier 4.
1) ANY features missing for APPSUMO vs. what you offer direct from your website to the public?
2) Will Tier 3 or 4 include all future updates? if not, would you be able to provide details if possible? Especially the new NEWSLETTER feature you mentioned?
Great product - thank you!