User blog comment:Tecku/TT: Premiums and Gemiums/@comment-1764483-20150314164127/@comment-4417029-20150314165206

When I look back, I realized that we have about 16 premium plants in total, 5 of which are gem-purchased. We only have 4 premium upgrades, I think Popcap should start introducing Upgrades again, whether it is free or premium. And, I have high hope that Gemium Upgrades might show up but, eh, 50/50 chance I guess.