I think it's quite nice, before this it was more or less a possibility based on the fact that CA said he'd never really abandon the game, but it's nice to see some guarantee in his words, especially since he hasn't ever really gone back on any big promise or content drop, and is very genuine in following everything he explicitly says through.
I do wonder what can be added to the game without overinflating it though, I already felt like the game was very well flushed out with 1.5, and 1.6 has a few content features I think oversaturate the game. An update like 1.5 would be perfect IMO, though I'm not sure how such a thing could be pulled off now in the games development.
I really do hope he focuses on HC first and ideally gains some more insight from that, it's crazy how stardew is his first game
