When you say that an update might be due soon, do you mean
from 818v3 to an 818v4?
Careful, I said "could" and that it was a "guess". I wouldn't go as far as "might"! I think v2-v3 was £1500 or so but you could look it up. Check out the link "Duncan's Meridian Info" above for price lists.
Thanks, Ludwig.
If I am reading Duncan's info correctly, it looks like the 818 was introduced in January 2012 and first made available in February 2012.
Then the 818v2 was introduced/released in December 2012 and the 818v3 was introduced/released in January 2015.
So, ten months from 818 to 818v2 ... and then 25 months from 818v2 to 818v3. Disregarding the first 10-month interval, two years might be a typical interval between updates, although I'm looking at an extremely small sample size. The last update (to v3) was just about three years ago so it does appear that the 818
could be due for an update.