thanks for all the responses.
Steve i wanted to add that your journey in particular on this forum made fascinating and very informative reading, thanks for sharing that.
I emailed Sony to see if they'd say anything about a date for a new model, but as expected they wouldn't say a word:
With reference to your enquiry regarding the Sony DSC-RX series, we regret to inform you that we cannot confirm any information regarding this. We recommend that you pin our page below and check it periodically for updates:
https://www.sony.co.uk/
Oh well, wait and see
The time to pull the trigger for a purchase is when you feel "I need an upgrade NOW". Once you have decided, stop looking at announcements, because you will always find the one you bought slightly cheaper or a newer version come out. By not looking you will save yourself some grief.
Niels