We received this as a tip and it seems interesting. We have heard about Lumia 1820 many times before and while there seems to be no compelling evidence of this device coming soon, a listing at Noreve France may indicate otherwise.
Noreve France is manufacturer of luxury cases for smartphones and doesn’t look like one to put a listing just for the sake of hits. So, Noreve lists a traditional leather case for Nokia Lumia 1820 and mentions clearly that it will be available online very soon. Nothing else gets revealed from the listing, but may be we can see Lumia 1820 getting unveiled sooner than expected.