Ranli has always been rather erratic in updating the game and was pretty bad the last couple of years, but he made an effort in making maybe smaller updates but more regularly since the start of season 2. The publication dates for updates in 2023 (in reverse) have been 29/09, 10/08, 25/05, 11/04, 17/03, 25/02 and 20/01 (and in the last part of 2022 it was 30/11, 29/09, 23/08, 19/07, 16/06).Are you sure about that?, I'd be the first to admit that I'm not good at keeping track of time, I would have actually guessed 2-3 times per year if the last couple weren't in Aug and May.
But like I say, I don't really clock watch, do you know of a chart somewhere that shows the approx release dates? it's nice to have something like that to refer to when people start asking the "are we nearly there yet" questions.
So except the two months in June and July this year and October last year, the updates have really been not too bad.
Concerning the chart, he published the plan of the content for each update but not the dates -but honestly that's very rare that devs can say so much in advance when the updates will drop.