From the post of "NTR Mobile v0.15.2 now available on Patreon!!!" made 15 days ago.
"The previous version ( 0.14.2 ) will be made available for free on Itch.io within 2 weeks" *will* denotes certainty, setting customer expectations.
The free version absolutely shouldn't be your priority because it already was your priority when you were making it those months ago, continuing to work on a previous version that is already released to premium members effectively creating a second project demands splitting resources that most importantly slows progress lowering the value of your product,furthermore including implementations (be it QOL,content, etc.) from the active version and adding them to past versions publicly available. I think devalues the exclusivity benifit of the new versions I am paying to receive.