The GR II is probably my favourite camera of all time and my III is being delivered today. Just saw the news that they've announced a GR IIIx which will have a 40mm equivalent lens, which will be mighty tempting for me - I like the 28mm originals for their croppability but 40mm is a wonderful FOV. I can see my RX10IV making way for one of these 
Dust issues aside (which are real issues), I've never used more sensibly designed cameras than the GR series. I always hoped they would do this with a 50mm equivalent. 40 is close enough
